Boy's Jellyfish Board Swim Shorts - Navy/blue

Name: Boy's Jellyfish Board Swim Shorts - Navy/blue
Brand: Kes-Vir
SKU: KV-BBS-NBJ34
Price: 33.5 GBP
Availability: InStock

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GymBum UK Size Guide

GYMBUM UK®

Size Guide

1️⃣ Women – Sports Bras

Measure Yourself

For accurate sizing, keep the tape measure level and parallel to the ground.

Bust
Measure around the fullest part of your chest.

Underbust
Measure directly under your bust where the bra band sits.

Body Measurements (Inches)

Size	Bust	Underbust
XS	33–34"	27–28"
S	34–36"	28–30"
M	36–38"	30–32"
L	38–40"	32–34"
XL	40–43"	34–36"
2XL	43–46"	36–39"
3XL	46–49"	39–42"

Between sizes?
Size up for a more comfortable fit.
Size down for a more compressive performance fit.

2️⃣ Women – Tops & T-Shirts

Body Measurements (Inches)

UK Size	Bust	Waist
4–6	31–33"	24–26"
8–10	33–36"	26–28"
12–14	36–40"	28–32"
16	40–43"	32–34"
18	43–46"	34–37"

3️⃣ Women – Leggings & Shorts

Body Measurements (Inches)

UK Size	Waist	Hips
4–6	24–26"	34–36"
8–10	26–28"	36–38"
12–14	28–32"	38–42"
16	32–34"	42–44"
18	34–37"	44–46"

4️⃣ Men – Tops & Hoodies

Size	Chest	Waist
S	36–38"	30"
M	38–40"	32–34"
L	42–44"	36"
XL	46–48"	38"
XXL	50–52"	40–42"

5️⃣ Men – Shorts & Joggers

Size	Waist
S	30"
M	32–34"
L	36"
XL	38"
XXL	40–42"

Fit & Sizing Notes

Some styles follow Asian sizing and may run 1–2 sizes smaller than standard UK sizing.
Refer to each product description for specific fit details.
Measurements may vary slightly depending on fabric and cut.

Boy’s Jellyfish Navy/Blue Incontinence Board Swim Shorts

Make swimming feel easier with these boys’ Jellyfish Navy/Blue incontinence board swim shorts.

Designed to look like regular swim shorts, they include built-in waterproof inner briefs to support children who need discreet protection in the water. They are ideal for swimming lessons, hydrotherapy, school swimming, holidays and family trips to the pool.

The fun Jellyfish print gives them a bright, modern look, while the secure inner brief helps parents and children feel more confident around water.

Key Features

Two-in-one design with outer board shorts and built-in waterproof inner briefs
Discreet protection for bowel incontinence, helping children feel more secure in the water
Adjustable waistband and leg openings for a close, comfortable fit
Built-in waterproof swim pants made from breathable PU coated polyester
Chlorine-resistant fabric with no pilling
UPF 50+ sun protection
Back vent to help prevent air from becoming trapped inside the shorts
Lightweight, quick-drying and easy to wear

Fit Guidance

For the best protection, these swim shorts should fit snugly around the waist and upper legs without feeling uncomfortable.

Please measure before ordering and check the size guide carefully. If the fit is too loose around the legs, containment may be reduced.

Top tip: You can also compare the measurements with a well-fitting pair of the child’s own close-fitting underwear. The fit should feel secure, especially around the leg openings, to help keep everything contained while swimming.

Size Guide

Important: For incontinence swimwear, the lower waist and upper leg measurements are the most important. Please check these before choosing a size.

Age	Height	Chest	Lower Waist	Upper Leg
3–4 years	104 cm	57 cm	48–58 cm	27–42 cm
5–6 years	116 cm	61 cm	51–61 cm	30–44 cm
7–8 years	128 cm	67 cm	54–64 cm	33–46 cm
9–10 years	140 cm	71 cm	58–68 cm	36–48 cm
11–12 years	152 cm	77 cm	62–72 cm	39–50 cm
13–14 years	164 cm	81 cm	68–78 cm	41–52 cm
15–16 years	176 cm	87 cm	72–82 cm	44–54 cm

How to measure

Lower waist: Measure around the lower waist, where the waistband of the shorts will sit.

Upper leg: Measure around the top of the leg, just below the groin, where the inner brief leg opening will sit.

Chest: Measure around the fullest part of the chest.

Height: Measure from the top of the head to the floor while standing straight.

Choosing the right size

Use the lower waist and upper leg measurements as the main guide
The inner brief needs to fit closely around the legs for better containment
If the child is between sizes, check the upper leg measurement first
Avoid sizing up too much, as a loose fit may reduce protection in the water

Fabric

Outer: 100% Polyester
Inner: PU coated 100% Polyester

Colour

Jellyfish / Navy / Blue
Product code: KV-BBS-NB

Care Instructions

Rinse thoroughly in cold water immediately after use
Machine washable at 40°C
Do not tumble dry
Do not wring
Wash in a laundry bag where possible

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Boy's Jellyfish Board Swim Shorts - Navy/blue