How to Choose Kids Climbing Shoes: Solution Comp Jr Fit

By La Sportiva North America | Published: 2026-11-05

Category: How-to Guides

A practical, step-by-step guide to sizing and choosing youth climbing shoes, including how the Solution Comp Jr fits young, lightweight climbers.

Quick answer

Start with a shoe that fits snugly but leaves about a finger-width of room for growth, and choose a youth-specific model like the Solution Comp Jr if your child is lightweight and climbing regularly. Avoid buying adult shoes sized down or shoes that are already painful at the toe.

Why youth-specific shoes matter for growing feet

Children's feet are still developing, so a climbing shoe that is too tight can affect comfort and foot health. Youth shoes are built around lighter body weights and shorter foot lengths, which changes how the rubber and last behave on small feet. The Solution Comp Jr is designed for young athletes up to 110 lb, so the support and sensitivity are matched to that weight range rather than scaled down from an adult performance shoe.

If your child is above that weight range or has stopped growing, an adult shoe in a comparable size may be more appropriate. The trade-off is that many adult performance shoes assume more foot strength and body weight, so they can feel stiffer or more aggressive than a youth model.

When to size up and when to stay snug

Growing feet need some room, but too much room causes heel slip and poor edging. A common mistake is buying a shoe that is comfortable to walk in; climbing shoes should feel tight but not painful, with toes flat or slightly curled depending on the terrain your child climbs. For beginners, a flatter, less downturned shoe is easier to manage, while competition-focused kids may prefer a more precise fit.

The Solution Comp Jr uses a Vibram XS Grip2 half sole, which is a soft, grippy rubber. That softness can make a slightly roomier fit feel more forgiving at first, but it also means the shoe will not mask a poor fit for long. Check that the heel stays put when your child stands on a small edge.

Step-by-step kids climbing shoe fitting

Measure both feet at the end of the day: Have your child stand on a piece of paper and trace both feet, then measure from heel to longest toe. Use the larger foot for sizing, since feet are often slightly different sizes and swell during activity. Write down the measurement in centimeters and compare it to the brand's size chart before ordering.
Choose a youth-specific model for growing feet: Look for shoes labeled for youth or junior climbers, like the Solution Comp Jr, which is built for lightweight athletes. Avoid adult shoes sized down unless your child is fully grown or above the youth weight range. Check the manufacturer's weight and size guidelines on the product page; if your child is near the upper limit, consider an adult model.
Try on with the socks you will climb in: Most kids climb in thin socks or barefoot. Bring the same socks to the try-on, and slide the foot in while seated, then stand and press toes against a small edge. The heel should not lift more than a few millimeters. If the heel slips when standing on a edge, try a half size smaller or a different model with a narrower heel.
Check toe position and room for growth: Toes should be flat or slightly curled, not jammed. Leave about a finger-width (roughly 1 cm) of space behind the heel when the foot is pushed forward, but no more. Too much space causes the shoe to roll and reduces precision. Avoid buying more than one size up; children's feet grow unpredictably, and an oversized shoe teaches poor footwork.
Test heel tension and closure: With the shoe on, have your child rise onto their toes and then rock back onto their heels. The heel should stay seated and the closure system should not pinch or gap. Adjust straps or laces evenly across the top of the foot. If the shoe has a strap, check that it lies flat and does not dig into the ankle when flexed.
Do a short climbing test indoors: If possible, let your child climb a few easy routes or boulder problems in the shoes. Watch for slipping, toe pain, or heel lift. A good fit feels tight but not sharp, and your child should be able to stand on small holds without the shoe rolling. Return or exchange before using the shoes outdoors; once rubber is scuffed, most stores will not accept returns.

Product facts

Solution Comp Jr: Designed for young, lightweight athletes up to 110 lb with elite-level grip and sensitivity. This weight-specific design means the shoe's flex and support are tuned for children, not scaled-down adults, so fit and performance are more predictable.
Solution Comp Jr