Size chart

If you are unsure which size to choose, you can contact us at info@blue-nomads.gr, providing your height and weight, or by phone at 2109730929.

These charts are for guidance only, intended to assist in selecting the correct size for suits or clothing. Always take into account individual body types.

CRESSI

European Size Guide • European Size Guide

Size	Weight	Height	Bust	Waist	Hips
Cressi-Sub Women
	Kg	cm	cm	cm	cm
XS/1	48/54	162/169	81/83	61/64	86/88
S/2	53/60	165/172	85/88	63/68	90/92
M/3	59/68	168/175	90/93	66/72	94/96
L/4	67/75	171/178	95/98	70/76	98/100
XL/5	75/85	174/182	99/103	75/80	101/104

Size	Weight	Height	Bust	Waist	Hips
Cressi-Sub Men
	Kg	cm	cm	cm	cm
S/2	58/65	168/175	87/92	71/74	80/85
M/3	63/78	170/178	92/98	74/78	85/90
L/4	75/85	175/183	98/103	78/83	88/93
XL/5	83/95	177/186	103/107	83/87	95/98
XXL/6	88/100	179/192	107/110	87/93	98/103
XXXL/7	95/110	181/196	110/114	93/97	102/107

Size	Age	Weight	Height
Children's Swimsuits
S	1-2 years	10–13 kg	76–84 cm
M	3-4 years	13-21 kg	83–109 cm
L	5-6 years	21-26 kg	109-119 cm
XL	7-8 years	26-32 kg	119-135 cm
XXL	9-10 years	32-39 kg	135-145 cm

Measurement Instructions

Height: Measure the child without shoes, from the top of the head to the floor.
Weight: Use weight as a supplementary indicator, not as the sole criterion.
Fit: The suit should fit comfortably against the body, without excessive gaps or tight constriction.

Important Notes

The sizes and ranges are derived from the provided Cressi size chart and are intended solely as a reference guide. Age ranges are indicative. If the child falls between two sizes, consider the larger size, depending on the fit and the specific model. Measurements may vary slightly depending on the suit's cut and design.

Size	Age	lb	kg	in	cm
Cressi-Sub Kids
S	1-2	22-29	10-13.1	30-33	76.2-83.8
M	3-4	29-46	13.1-20.9	33-43	83.2-109.2
L	4-6	46-57	20.9-25.6	43-47	109.2-119.4
XL	6-8	57-71	25.6-32.2	47-53	119.4-134.6
XXL	8-10	71-85	32.2-38.6	53-57	134.6-144.8

This chart is for reference only, intended to assist in selecting the correct suit size. Always take into account each individual's specific body type.

ARENA

European Size Guide

Find the right Arena size

Measure your body directly, without pulling the tape measure too tight. All measurements are in centimeters (cm) and sizes follow the European sizing system.

How to measure: Height: without shoes. Chest: at the widest point. Waist: at the natural waistline. Hips: at the widest point.

Arena Size	EU	Height (cm)	Bust (cm)	Waist (cm)	Hips (cm)
MEN • MEN
XS	40-42	165-170	85-90	65-70	80-85
S	44-46	170-175	90-95	70-75	85-90
M	48	175-180	95-100	75-80	90-95
L	50-52	180-185	100-105	80-85	95-100
XL	54	185-190	105-110	85-90	100-105
XXL	56-58	190-195	110-115	90-95	105-110
XXXL	60	195-200	115-120	95-100	110-115

Arena Size	EU	Height (cm)	Bust (cm)	Waist (cm)	Hips (cm)
WOMEN
XS	34	155-160	75-80	60-65	80-85
S	36	160-165	80-85	65-70	85-90
M	38	165-170	85-90	70-75	90-95
L	40	170-175	90-95	75-80	95-100
XL	42	175-180	95-100	80-85	100-105
XXL	44	180-185	100-105	85-90	105-110

KIDS • JUNIOR

Children's sizing is primarily based on height and key body measurements. For racing swimwear or products with a particularly tight fit, always check the specific model's size chart as well.

Arena Size	Age (approx.)	Height (cm)	Chest (cm)	Waist (cm)	Hips (cm)
BOYS
2A / 92	2 years	86–92	51–53	50–52	54-56
3A / 98	3 years	92–98	53–55	52–54	56-58
4A / 104	4 years	98–104	55–57	54–55	58-60
6A / 116	6 years	110–116	59–61	55-57	63-65
8A / 128	8 years	122–128	63–67	57-60	67-71
10A / 140	10 years	134–140	67–71	60-63	71-75
12A / 152	12 years	146–152	71–76	63-67	75-80
14A / 164	14 years old	158–164	76–82	67-72	80-86

Arena Size	Age (in.)	Height (cm)	Bust (cm)	Waist (cm)	Hips (cm)
GIRLS • GIRLS
2A / 92	2 years old	86–92	51–53	50–52	54-56
3A / 98	3 years old	92–98	53–55	52–54	56-58
4A / 104	4 years old	98–104	55–57	54–55	58-60
6A / 116	6 years old	110–116	59–61	55-57	63-65
8A / 128	8 years old	122–128	63–67	57-60	67-71
10A / 140	10 years	134–140	67–72	60–63	71–76
12A / 152	12 years	146–152	72–78	63–67	76–82
14A / 164	14 years	158–164	78–84	67–72	82–88

Important note on size selection The tables above serve as a guide to European sizes for Arena products and are intended to assist with selection. Fit may vary between training swimwear, racing swimwear, Powerskin, beachwear, apparel, and different product lines. If measurements fall between two sizes, it is recommended to check the specific product's size chart or seek advice before purchasing.

Blue Nomads Swimwear • Diving • Outdoor For more information regarding the correct size, please contact our team.

O'NEILL

Men's Rashguard • European Size Guide

Size guide for O'Neill men's rashguards, based on height, weight, chest circumference, and waist.

Size	Height	Weight	Chest	Waist
Men's Rashguards
XS	170–175 cm	57–64 kg	92–95 cm	72–74 cm
S	173–178 cm	64–70 kg	95–99 cm	74–78 cm
M	175–180 cm	70–77 kg	99–104 cm	78–83 cm
L	178–190 cm	77–86 kg	104–110 cm	83–88 cm
XL	180–185 cm	86–95 kg	110–116 cm	88–93 cm
2XL	183–188 cm	95–104 kg	116–123 cm	93–99 cm
3XL	183–191 cm	104–114 kg	123–129 cm	99–111 cm

Measurement Instructions

Height: Measure without shoes, from the top of the head to the floor.
Chest: Measure the circumference at the widest part of the chest, just below the armpits.
Waist: Measure around the natural waistline, without pulling the tape measure too tight.
Weight: Use weight as a supplementary guide for selecting the size.

Important Notes

The sizes and ranges are based on the provided O'Neill size chart and are intended as a reference guide. If your measurements fall between two sizes, consider the desired fit and the specific model's guidelines. Rash guards are designed for a relatively snug fit, without restricting movement.

X-DIVE

European Size Guide

Size guide for X-Dive men's diving suits. The values are indicative and based on height, weight, and chest circumference.

Size	Code	Height	Weight*	Chest**
Men's Diving Suits
XS	1	160–167 cm	55–63 kg	88–93 cm
S	2	167–172 cm	60–69 kg	93–98 cm
M	3	172–178 cm	68–77 kg	97–102 cm
L	4	175–183 cm	76–85 kg	101–106 cm
XL	5	182–188 cm	84–94 kg	105–110 cm
XXL	6	186–192 cm	93–103 kg	109–115 cm
XXXL	7	191–197 cm	102–114 kg	115–122 cm

How to measure yourself

Height: Measure without shoes, from the top of the head to the floor.
Weight: Use your body weight as a general guide.
Chest: Measure the circumference at the widest part of the chest, keeping the tape measure horizontal and without pulling it too tight.

Important Notes

* Weight is indicative and not the sole criterion for selection.
** If your measurements fall between two sizes, consider the cut, the suit's thickness, the fit, and the type of undergarments worn.
For a proper fit, the suit should fit comfortably and evenly, without significant gaps or excessive pressure. These ranges serve as a reference guide and may vary depending on the specific X-Dive model.

MARES

European Size Guide

Find the right Mares size Size selection guide for wetsuits, diving boots, and open-heel fins. Measurements are provided in the European metric system.

How to measure: Height without shoes. Chest at the widest point. Waist at the natural waistline. Hips at the widest point. For boots and fins, measure foot length and use the EU size as the primary reference.

Mares	EU	Height (cm)	Bust (cm)	Waist (cm)	Hips (cm)
MEN'S WETSUITS • MEN'S WETSUITS ≥ 5 mm
S	S	175	93	73	91
M	M	178	97.5	77.5	95.5
L	L	181	101.5	81.5	99.5
XL	XL	184	105.5	86	104
XXL	2XL	187	110	90	108
3XL	3XL	190	114	94	112
4XL	4XL	193	118	98	116

Mares	EU	Height (cm)	Bust (cm)	Waist (cm)	Hips (cm)
WOMEN'S WETSUITS ≥ 5 mm
XS	XS	164	77.5	67	84
S	S	167	81.5	71	88
M	M	170	85.5	75	92
L	L	173	89.5	79	96
XL	XL	176	93.5	83	100
XXL	2XL	179	97.5	87	104
3XL	3XL	182	101.5	91	108

DIVING BOOTS • NEOPRENE BOOTS

The sizes below follow the Mares chart for neoprene boots. Select based on the European shoe size and consider the thickness of the sock/neoprene, the fit, and the specific model.

Mares Size	Code	EU	US (approx.)	JP (cm)
4XS	030	34/35	3	-
3XS	040	35/36	4	-
2XS	050	36/37	5	23
XS	060	38	6	24
S	070	39/40	7	25
M	080	40/41	8	26
L	090	41/42	9	27
XL	100	43	10	28
2XL	110	44/45	11	29
3XL	120	45/46	12	-
4XL	130	47	13	-

Mares Size	European (EU)	Men's EU (approx.)	Women's EU (approx.)	Note
OPEN-HEEL TYPE OPEN-HEEL FINS The sizes below follow the Mares chart for neoprene boots. Select based on your European shoe size, taking into account the thickness of the sock/neoprene, the fit, and the specific model.
S/M	35-38	35-38	35-38	Small foot pocket
M/L	39-43	39-43	39-43	Medium / Large
L/XL	44-47	44-47	44-47	Large foot pocket

Important: Not all Mares product lines use the same sizing. For example, some open-heel models use S/M, M/L, and L/XL, while others use XS, SM, REG, and XL. The chart above is a general guide and does not replace the specific model's size chart.

GENERAL SELECTION GUIDELINES

Wetsuits: The suit should fit snugly and evenly, without gaps, yet without restricting breathing or movement.
Boots: The foot should be supported comfortably, without the toes pressing against the front.
Open-heel fins: Designed for use with diving boots. The correct choice depends on the actual external size of the boot and the fin's foot pocket.
Between sizes: Check the specific product chart or contact the Blue Nomads team before purchasing.
*The charts serve as a selection guide. Actual dimensions and fit may vary depending on the model, neoprene thickness, and design.

FOURTH ELEMENT

Complete Size Guide

Comprehensive Fourth Element size guide for wetsuits, general apparel, fins, and boots. Measurements are provided in centimeters, and shoe sizes are listed in UK, US, and EU formats where applicable.

Contents

Men's General Size Chart
Men's Wetsuit Size Chart
Women's General Size Chart
Women's Wetsuit Size Chart
Rec Fins and Tech Fins
Boots / Socks

Sizing Instructions

Measure your body using a tape measure held horizontally, without pulling it tight. For wetsuits, pay particular attention to height, chest, waist, and inside leg length. If you fall between two sizes, consider your preferred fit and the specific product model.
*The charts serve as a reference guide. Fit may vary depending on the design, material, thickness, and cut of each product.

Men's General Size Chart

Size	Height (cm)	Bust (cm)	Waist (cm)	Hips (cm)
Men's General Sizing
X Small Short	161–169	76–86	58–68	73–77
X Small	165–172.5	76–86	58–68	76–80
Small Short	165–172.5	86–96	68–78	76–80
Small	170–178	86–96	68–78	79–83
Small Tall	175.5–183	86–96	68–78	82–86
Medium Short	170–178	96–106	78–88	79–83
Medium	175.5–183	96–106	78–88	82–86
Medium Tall	180.5–188	96–106	78–88	85–89
Large Short	175.5–183	106–116	88–98	82–86
Large	180.5–188	106–116	88–98	85–89
Large Tall	185.5–193	106–116	88–98	88–92
X Large Short	180.5–188	116–126	98–108	85–89
X Large	185.5–193	116–126	98–108	88–92
X Large Tall	190.5–198	116–126	98–108	91–95
XX Large Short	185.5–193	126–136	108–118	88–92
XX Large	190.5–198	126–136	108–118	91–95
XXX Large Short	190.5–198	136–146	118–128	91–95
XXX Large	195.5–203	136–146	118–128	94–98

Men's Wetsuit Size Chart

Size	Height (cm)	Chest (cm)	Waist (cm)	Inside leg (cm)
Men's Wetsuit Sizing
X Small Short	160–166	88–93	73–78	73–76
X Small	165–171	88–93	73–78	76–79
Small Short	165–171	93–98	78–83	76–79
Small	170–176	93–98	78–83	79–82
Small Tall	175–181	93–98	78–83	82–85
Medium Short	170–176	98–103	83–88	79–82
Medium	175–181	98–103	83–88	82–85
Medium Tall	180–186	98–103	83–88	85–88
Large Short	175–181	103–108	88–93	82–85
Large	180–186	103–108	88–93	85–88
Large Tall	185–191	103–108	88–93	88–91
X Large Short	180–186	108–113	93–98	85–88
X Large	185–191	108–113	93–98	88–91
X Large Tall	190–196	108–113	93–98	91–94
XX Large Short	185–191	113–118	98–103	91–94
XX Large	190–196	113–118	98–103	91–94
XXX Large	195–201	118–123	103–108	94–97

*The inside leg length is particularly useful for selecting the right fit for full-body suits.

Women's General Size Chart

Size	Height (cm)	Bust (cm)	Waist (cm)	Hips (cm)
Women's General Sizing
X Small Short	161–169	76–86	58–68	73–77
X Small	165–172.5	76–86	58–68	76–80
Small Short	165–172.5	86–96	68–78	76–80
Small	170–178	86–96	68–78	79–83
Small Tall	175.5–183	86–96	68–78	82–86
Medium Short	170–178	96–106	78–88	79–83
Medium	175.5–183	96–106	78–88	82–86
Medium Tall	180.5–188	96–106	78–88	85–89
Large Short	175.5–183	106–116	88–98	82–86
Large	180.5–188	106–116	88–98	85–89
Large Tall	185.5–193	106–116	88–98	88–92
X Large Short	180.5–188	116–126	98–108	85–89
X Large	185.5–193	116–126	98–108	88–92
X Large Tall	190.5–198	116–126	98–108	91–95
XX Large Short	185.5–193	126–136	108–118	88–92
XX Large	190.5–198	126–136	108–118	91–95
XXX Large Short	190.5–198	136–146	118–128	91–95
XXX Large	195.5–203	136–146	118–128	94–98

*The Short, Regular, and Tall options allow for a better fit across different body proportions.

Women's Wetsuit Size Chart

Size	Height (cm)	Chest (cm)	Waist (cm)	Hips (cm)
Women's Wetsuit Sizing
XX Small Short	154–159	72–77	56–61	84–89
XX Small	157–162	72–77	56–61	84–89
X Small Short	157–162	77–82	61–66	89–94
X Small	160–165	77–82	61–66	89–94
Small Short	160–165	82–87	66–71	94–99
Small	163–168	82–87	66–71	94–99
Small Tall	166–171	82–87	66–71	94–99
Medium Short	163–168	87–92	71–76	99–104
Medium	166–171	87–92	71–76	99–104
Medium Tall	169–174	87–92	71–76	99–104
Medium/Large	168–173	87–92	76–81	104–109
Large Short	166–171	92–97	76–81	104–109
Large	169–174	92–97	76–81	104–109
Large Tall	172–177	92–97	76–81	104–109
X Large Short	169–174	97–102	81–86	109–114
X Large	172–177	97–102	81–86	109–114
XX Large Short	169–174	102–107	86–91	114–119
XX Large	172–177	102–107	86–91	114–119
XXX Large Short	169–174	107–112	91–96	119–124
XXX Large	172–177	107–112	91–96	119–124

*For women's suits, always compare bust, waist, and hip measurements alongside height to select the best fit.

Sandals and Boots

Size	Foot pocket width	Foot pocket height	Shoe Size	Weight
Rec Fins
X Small	8 cm	8 cm	UK 1–3 (US 1.5–4.5)	1.5 kg
Small	9 cm	8 cm	UK 4–6.5 (US 5–7.5)	1.7 kg
Regular	9 cm	9 cm	UK 7–9 (US 8–10)	2 kg
X Large	9 cm	10 cm	UK 9.5–12 (US 10.5–13)	2.4 kg

Size	Foot pocket width	Foot pocket height	Shoe Size	Weight (combined)
Tech Fins
Medium	10 cm	7.5 cm	UK 4–7 (US 5–8)	2.1 kg
Large	11 cm	8 cm	UK 8–10 (US 9–11)	2.4 kg
X Large	11.5 cm	8.5 cm	UK 10–12 (US 11–13)	2.6 kg
XX Large	12 cm	9 cm	UK 12–14 (US 13–15)	2.9 kg

Size	UK	US	EU
Boots / Socks
XS	4	5	37
S	5	6	38
S	6	7	39.5
M	7	8	41
M	8	9	42
L	9	10	43
L	10	11	44.5
XL	11	12	46
XXL	12	13	47
XXL	13	14	48

*Note: For ankle boots, the same size letter may correspond to more than one EU/UK/US size, as shown in the reference chart.

Size chart

CRESSI

ARENA

KIDS • JUNIOR

O'NEILL

X-DIVE

MARES

DIVING BOOTS • NEOPRENE BOOTS

FOURTH ELEMENT

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Size chart

CRESSI

ARENA

KIDS • JUNIOR

O'NEILL

X-DIVE

MARES

DIVING BOOTS • NEOPRENE BOOTS

FOURTH ELEMENT