Boys Swim Trunks – Quick-Dry, Four-Way Stretch
Size Guide
Use this guide to choose the right size. Measurements are approximate and can vary slightly between styles, so always check the size notes on each product page. If your child is between sizes, we recommend sizing up.
How to measure
- Height: stand your child against a wall without shoes and measure from the floor to the top of the head.
- Weight: use a recent weight; for babies, weight is often the better guide.
- Feet: have your child stand on paper, mark the heel and longest toe, and measure the distance. Add about 1 cm (0.4 in) of growing room.
Some products are labeled by height in centimeters (for example 90cm). That size fits a child who is about that tall.
Baby (0–24 months)
| Size | Height | Weight |
|---|---|---|
| Newborn | up to 21.5 in (55 cm) | up to 8 lb |
| 0–3M | 21.5–24 in (55–61 cm) | 8–12.5 lb |
| 3–6M | 24–26.5 in (61–67 cm) | 12.5–16.5 lb |
| 6–9M | 26.5–28.5 in (67–72 cm) | 16.5–20.5 lb |
| 9–12M | 28.5–30 in (72–76 cm) | 20.5–24 lb |
| 12–18M | 30–32 in (76–81 cm) | 24–27.5 lb |
| 18–24M | 32–34 in (81–86 cm) | 27.5–30 lb |
Toddler (2T–5T)
| Size | Age | Height | Weight |
|---|---|---|---|
| 2T | 1–2 years | 33–35 in (84–90 cm) | 26–29 lb |
| 3T | 2–3 years | 36–38 in (91–97 cm) | 29–32 lb |
| 4T | 3–4 years | 39–41 in (99–104 cm) | 33–36 lb |
| 5T | 4–5 years | 42–44 in (107–112 cm) | 37–40 lb |
Kids (5–14 years)
| Size | Height | Weight |
|---|---|---|
| 5–6Y | 43–46 in (110–117 cm) | 40–46 lb |
| 6–7Y | 46–48 in (117–122 cm) | 46–52 lb |
| 7–8Y | 48–50 in (122–128 cm) | 52–60 lb |
| 10Y | 53–55 in (135–140 cm) | 67–76 lb |
| 12Y | 57–59 in (145–150 cm) | 83–95 lb |
| 14Y | 61–63 in (155–160 cm) | 100–112 lb |
Kids' shoes
| EU size | Approx. US size | Foot length |
|---|---|---|
| EU 20 | US 4.5 toddler | 12.5 cm (4.9 in) |
| EU 22 | US 6 toddler | 13.5 cm (5.3 in) |
| EU 24 | US 7.5 toddler | 14.8 cm (5.8 in) |
| EU 26 | US 9 toddler | 16 cm (6.3 in) |
| EU 28 | US 10.5 little kid | 17.2 cm (6.8 in) |
| EU 30 | US 12 little kid | 18.5 cm (7.3 in) |
| EU 32 | US 13.5 little kid | 19.8 cm (7.8 in) |
| EU 34 | US 2 big kid | 21 cm (8.3 in) |
| EU 36 | US 4 big kid | 22.4 cm (8.8 in) |
Shoe sizes between those shown follow the same pattern. Products sized in cm (for example rain boots) are labeled by inside foot length.
Still unsure? Contact us with your child's height, weight or foot length and we'll recommend a size. Size exchanges are covered by our Returns & Refund Policy.
Why parents love it
Boys Swim Trunks Built for All-Day Splashing, Not Just the Photo
Pool days and beach trips move fast, and kids' swimwear needs to keep up without bunching, fading, or drying out slowly in a beach bag. These boys swim trunks are made from a four-way stretch spandex-polyester blend with quick-dry performance, so they move with active kids from the diving board to the sand and dry out again before the next dip.
Why Parents Love These Swim Trunks
- Four-way stretch fabric: A spandex-polyester blend stretches in every direction, so kicking, climbing, and cannonballs never feel restricted.
- Quick-dry performance: The lightweight 130-160gsm fabric sheds water fast, cutting down on that cold, clingy feeling after swim time ends.
- Elastic drawstring waist: A secure, adjustable elastic waistband keeps trunks in place through every dive and splash fight.
- Breathable build: A lightweight, breathable construction keeps kids comfortable in the heat without feeling heavy when wet.
Made for Real Summer Days
These trunks are cut as a mid-waist, elastic-closure short designed for constant motion, not a stiff, dressy fit. That makes them just as useful for swim lessons as they are for a weekend at the lake.
- Pool parties and swim lessons
- Beach vacations and family trips
- Water parks and splash pads
- Everyday summer outdoor play
- Matching sibling or father-son swim sets
Available Options
These swim trunks are available in a wide color and print range, including solid blue, black, pink, white, red, yellow, lavender, brown, and silver, plus prints such as the lightning-bolt and striped styles shown here.
Specifications
- Style: Elastic-waist swim trunks with drawstring closure, mid-waist fit
- Material: Spandex/polyester blend, four-way stretch, 130-160gsm fabric weight
- Sizes offered: 6-12M, 12-18M, 18-24M, 2-3T, 4-5T, 6Y, 8Y, 10Y, 12Y, 14Y, 16Y
- Features: Quick dry, breathable, lightweight
Package Contents
Each order includes one (1) pair of boys swim trunks in the selected size and color.
Care Instructions
Rinse in cool water after each wear to remove chlorine, salt, and sunscreen residue. Machine wash cold on a gentle cycle. Hang or lay flat to dry; avoid high heat, which can damage the stretch fibers and elastic waistband.
Frequently Asked Questions
How stretchy is the fabric really?
The spandex-polyester blend is built as a four-way stretch fabric, meaning it stretches both horizontally and vertically to move with active kids rather than restricting motion.
What sizes are available?
Sizes run from 6-12 months through 16Y, covering infants through pre-teens in one size range.
Will the trunks dry quickly between pool sessions?
Yes, the lightweight 130-160gsm fabric is designed for quick-dry performance, which helps reduce that cold, wet feeling between swim sessions.
Will the color fade after repeated pool or ocean use?
Rinsing after each swim and avoiding high-heat drying helps preserve the color and stretch fibers over a full summer of wear.
The details
Features & specifications
- Four-way stretch fabric moves with active play
- Quick-dry, lightweight 130-160gsm build
- Secure elastic drawstring waist
- Sizes from 6-12M through 16Y
| Category | Swimwear |
|---|---|
| Color options | Blue, Black, Red, Yellow, White, Pink |
| Size options | 6-12M, 12-18M, 18-24M, 2-3T, 4-5T, 6Y, 8Y, 10Y, 12Y, 14Y, 16Y |
| Brand | Junior Cub |
| Shipping | Free shipping on every order |
Reviews
What parents are saying
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Boys Swim Trunks – Quick-Dry, Four-Way Stretch
$19.99
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