Growth Spurts and Gaps: Fitting Kids' Pads Without Buying Twice a Season

Buying protective kit for children is a bit like buying school shoes. You want room to grow, but too much room and they trip over their own feet. Pads are the same. A knee pad that is two sizes too big will slide out of place before the child has even reached the bottom of the trail, and a chest protector that flaps about is just a plastic bib with ambitions.

The good news is that kids' armour has got better. In 2026 you can find proper junior-specific padding for biking, skatepark sessions, scooting and indoor snow play. The bad news is that the fit still needs checking, and the hand-me-down box in the garage is not always the answer.

Start with the movement test, not the label

Age and height on the box are a starting point, not a guarantee. Put the pads on and ask the child to do the things they will actually do: pedal, squat, run, climb a step, bend down to pick up a glove. Watch the knee pad. Does it stay over the kneecap, or does it slide towards the shin? Watch the elbow pad. Does it rotate when they bend their arm?

A good fit should feel snug but not tight. You should be able to slide one flat finger under a strap, not a whole hand. If the pad leaves red marks after five minutes, it is too tight. If it shifts when they move, it is too loose. There is no magic size that fixes both.

Growth room is not the same as a size up

Parents are rightly cautious about buying kit that gets outgrown by half-term. But buying a size up is often false economy. Oversized knee pads slide down, oversized helmets sit too high or too low, and oversized chest protectors ride up into the neck. The child ends up uncomfortable, which means they fidget, which means the armour moves even more.

Look for adjustability instead. Straps with plenty of Velcro range, adjustable shoulder harnesses and knee pads with a decent elastic cuff are better than simply going up a size. Some junior pads have removable foam inserts, which can help as the child grows. Check whether the brand sells replacement liners or straps; that can stretch the life of the kit without compromising the fit.

Hand-me-downs: what survives and what does not

Passing pads down the family is sensible, but not everything survives. Helmets are the easy one: a second-hand helmet is only worth using if you know its history. If it has had a proper knock, been stored in a hot car for years or has a cracked shell, it is done. Do not risk it. The same goes for any armour with cracked plastic shells, compressed foam or torn straps.

Fabric-based pads and liners can often be washed and reused, provided the foam has not gone hard or flaky. Check the Velcro. If it barely sticks, the pad will move on impact. Check the stitching around the straps. A child will not notice a failing seam until it fails completely.

One more thing: hand-me-downs are not always the right shape. A pad that fitted an older sibling's leg may sit differently on a younger child, even if the measurements look close. Do the movement test again. Family budget is important, but so is coverage.

Layering for British weather

UK weather makes kids' armour trickier than it looks. A pad that fits perfectly over a T-shirt may become a struggle over a fleece, and a chest protector that sits well in the shop can feel tight once a waterproof jacket goes over the top. Test the kit with the layers your child will actually wear.

For biking, a thin long-sleeve base layer is usually better than a bulky hoodie. For skatepark sessions, a close-fitting top helps the pads stay put. For indoor snow centres, think about how thick the gloves and socks will be, because wrist and ankle straps need to work with them. If you are heading out in winter, remember that cold fingers make strap adjustments harder, so practise doing them up with gloves on at home.

Coverage checks without the safety lecture

Nobody wants a parent standing at the bottom of a skatepark ramp listing injury statistics. The trick is to check coverage quickly and then let them get on with it. A simple pre-ride pat-down works: shoulders, elbows, knees, hips, back. Ask them to bend and twist. If the pad is where it should be, give them a thumbs up and send them off.

Make it part of the routine rather than a big conversation. Pads on, helmet on, straps checked, then go. If something has moved, fix it straight away without turning it into a lesson. Children are more likely to keep wearing armour if it is comfortable and not associated with a ten-minute inspection every Saturday morning.

The buy-now-or-wait rule

If the pad only fits with a thick hoodie, it is probably too small. If it only fits with a thin base layer and the child is due a growth spurt, it may be worth buying now and checking again in a few months. If the pad slides even when snugged down, it is the wrong shape, not the wrong size. Try another brand.

Kids' armour does not need to be complicated. It needs to stay in place, cover the bits that hit the ground and be comfortable enough that they forget they are wearing it. Buy for the child in front of you, not the one they will be next summer, and check the fit before the first run, not after the first tumble.