Kids' Surf Clothing UK: What Groms Actually Need

Every parent who has taken a child surfing in Britain knows the shape of the day. Forty minutes of genuine, shrieking joy, followed by a negotiation on a gravel car park with a shivering seven-year-old who has sand in places sand should not be and one arm stuck in a jumper.

Whether they ask to go again has almost nothing to do with the waves. It has everything to do with how cold they got and how quickly you fixed it.

So this is the grom kit guide: what's worth buying, what isn't, and the ten minutes that decide the whole thing.

Kids get cold faster than you do, and it isn't them being soft

This is the bit worth understanding before you buy anything, because it explains most of what follows.

A child has more surface area for their body mass than an adult does, and less fat under the skin doing the insulating. They lose heat to the water faster and they have less in reserve once it's going. A ten-year-old in the same sea, in the same suit, for the same length of time as their dad is simply further through the process than he is.

Practically, that means three things. Their sessions are shorter than yours, and pretending otherwise is how you put them off. Their kit has to work harder than yours, not less hard. And you need to be watching them rather than the set on the horizon — proper shivering, blue lips, going quiet, or the thousand-yard stare are all the same message, which is that they finished five minutes ago and you missed it.

Get them out, get them warm, and don't make it a discussion.

The wetsuit is the only bit worth spending real money on

Everything else in this article can be improvised. The suit can't.

The thing that ruins cheap kids' suits isn't thickness, it's fit. A wetsuit works by holding a thin film of water against the skin and letting the body warm it. A baggy suit doesn't hold that film — it flushes, so every duck dive pumps eight-degree water down the back and out the ankles. A 5/4 that's two sizes too big is colder than a well-fitting 4/3. This is why the hand-me-down from an older sibling usually fails: it's the right thickness and the wrong shape.

Rough UK guide, assuming the sea runs about 16–17°C in early September and bottoms out around 7–9°C in late February:

• June to September: a 3/2 is enough for most kids, and shorties are fine for a splash about but not for an actual session.
• October, and April to May: 4/3, and start thinking about boots.
• November to March: 5/4 with a hood, boots, and gloves. Same as you.

Back zip is easier for small people to manage themselves, chest zip flushes less. If they're young enough that you're doing the zip anyway, take the chest zip. If they're at the age where being helped is worse than being cold, take the back zip and accept the trade.

Buy it to fit now, not to grow into

Every instinct as a parent says buy a size up. With a wetsuit, that instinct is wrong, for the flushing reason above. Buy it to fit this season.

Which is expensive, given a child will put on five to seven centimetres a year and be out of it by next autumn. So the honest answer is: buy the suit new and fitted, and get everything else second hand. Kids' wetsuits come up constantly on local Facebook groups and marketplace listings, usually outgrown rather than worn out, often at a third of retail. Surf schools sell off their hire stock at the end of the season. And if they're only surfing three times a year, hiring at the beach is cheaper than owning and involves nobody rinsing anything.

There's no dignity lost in a second-hand suit. Everyone in the car park is standing in something that has been someone else's problem at some point.

Boots come earlier than you think

Adults tend to treat boots as a winter thing. For kids they're more like an October thing, and for some kids a September thing.

Feet and hands go first because they're small, they're at the end of the line, and they're the bits that stop working in a way a child notices immediately. Cold feet end kids' sessions faster than anything else, and 3mm boots for autumn are about the cheapest extra half hour you can buy. Gloves are a harder sell — they make holding the rails awkward and a lot of kids hate them — but by December it's gloves or it's twenty minutes.

A hood matters too, and not just for warmth. Cold water in the ears repeatedly over years is what gives people surfer's ear in their forties, and a child who starts at eight has a very long run-up.

The ten minutes that decide whether they ask to come back

Here's the part nobody puts in the kit list.

Kids don't remember sessions, they remember endings. A brilliant hour followed by fifteen minutes of crying on a wet towel in a cross-shore wind gets filed as a bad day. A scrappy twenty minutes followed by being warm, dry and holding something hot within four minutes gets filed as brilliant, and they'll ask about next weekend on the drive home.

So the car park is the whole game, and it's worth over-preparing for:

• Dry clothes laid out in order before they get in the water, not rummaged for afterwards.
• A changing robe or a big hooded towel they can get dressed inside, so it's warm and private rather than a wrestling match on one leg.
• Two towels each. One is for the feet and nothing else.
• A flask, and something with sugar in it. Cold, tired kids negotiate badly.
• Engine and heaters on before anyone starts peeling rubber off.
• A bag for the wet stuff, because otherwise it lives on the back seat until Tuesday.

We've written the grown-up version of this — changing in a car park without losing the will to live — and most of it applies, only faster and with less patience available.

What we make for groms

We don't make wetsuits for kids, and we're not going to pretend the tee is the important purchase. What we make is the dry half — the stuff that goes on afterwards and gets worn to school on Monday.

• The Mini Thaw Crew (£30), in black or khaki — the warm one, and the one that does the actual work on the way home.
• The Bennett Grom Tee (£22) — same cotton-Sorona as the adult tees, so it's UPF 50+ without making a thing of it.

All of it is in the Groms' collection. Midweight cotton, cut loose, in colours that don't show a beach.

Sizing, honestly

Our kids' sizes are numbered 120 to 180 rather than by age, which is more accurate but less convenient if you're used to shopping by "age 7–8".

Don't guess from the number. Measure the child, or measure a jumper that currently fits them, and check it against the kids' table on the size guide — chest, length and sleeve are all listed. If they're between sizes, size up: this is outerwear worn over other things, and unlike a wetsuit, a bit of room is the point.

The honest bit

The fastest way to put a child off surfing is to treat it as a project. Ninety-minute drives, a tide that has to be caught, a stern face about paddling technique, and a session that ends when the adult has had enough.

Short is fine. Waist-high and messy is fine. Standing in the shorebreak getting knocked over and finding it hilarious is exactly fine, and is how nearly every good UK surfer started. Let them get out when they say they want to get out, even if it's been eleven minutes, because the day they learn that asking gets ignored is the day it becomes your hobby rather than theirs.

Pick somewhere with sand, lifeguards in season, and a car park you can get to quickly — the guide to UK surf spots has the regional rundown, and the season guide covers what each month actually gives you. Then keep it short, keep them warm, and finish before anyone's had enough.

They'll ask to go again. That's the whole job.

Kit built for exactly these conditions, not the brochure version — the Groms' range is here, and the winter clothing guide covers the adult version of all of the above. svrf.uk