Football Skins for Kids: Quick Picks
From October to March, the child who stands in a passing queue on a floodlit 3G pitch at 6pm gets cold long before the session ends. A close-fitting base layer under the training top or match shirt is the simplest fix, and it is the one piece of winter kit most children will actually agree to wear.
Parents call them skins, thermals, base layers or "under armour" after the brand. They all mean the same thing: a stretchy top, and sometimes leggings, worn under the kit. The one rule that catches families out is colour, because in a match the base layer has to match the shirt sleeve. That is covered in the colour rule below.
Our picks by job. Each link goes to the Amazon UK listing, where you can check current prices, colours and the size chart for your child.
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What Are Football Skins?
Football skins are close-fitting base layers worn under a football shirt and shorts. The top is usually long sleeved, and the bottoms are leggings (often called tights) or shorter undershorts. They sit against the skin, pull sweat away from it and keep a thin layer of warmth in, without adding bulk under the kit.
Three names get used for slightly different things:
- Skins or base layers: the standard version. Thin, stretchy, quick to dry. This is what most players wear under a match shirt.
- Thermals: a warmer base layer, usually with a brushed or fleecy inside face. Better for cold training nights, and sometimes too warm for a full match in milder weather.
- Compression tops: a tighter fit, marketed on muscle support for adult athletes. For children, the reasons to buy one are warmth and comfort. A compression fit is not needed at this age, and some younger children find a very tight top uncomfortable.
So skins and thermals are close relatives rather than identical. A child who trains on cold evenings and plays Sunday morning matches can get by with one standard skin. A child who stands still for long spells, or a goalkeeper, benefits from the thermal version.
Does My Child Need a Base Layer for Football?
Not every child needs one, and plenty play through winter in just their kit. A base layer earns its place in a few specific situations:
- Evening training from October onwards. Floodlit sessions on exposed 3G pitches are often the coldest football a child plays, and drills involve a lot of standing in lines.
- Younger age groups. Under 7s to Under 10s spend more time waiting for their turn and tend to get cold quicker. A cold, unhappy seven-year-old stops trying to get the ball.
- Substitutes. A child who starts on the bench on a frosty Saturday morning has to go on cold. Rolling subs in mini-soccer mean some children are on and off all game.
- Goalkeepers. They run far less than outfield players, so they get cold quickest of all. Law 4 of the Laws of the Game lets goalkeepers wear tracksuit bottoms, and many grassroots keepers wear base layer leggings or padded goalkeeper trousers in winter.
Players who run constantly, or who play in a midfield role that never stops, may find a base layer too warm once the game gets going. A short-sleeved base layer, or a thinner standard skin rather than a thermal, suits them better.
Football Parent note: Put the base layer on at home before the session, not in a cold car park. A skin goes on easily over dry, warm skin and is a struggle to get onto a cold, damp child after the warm-up has started.
Cold hands are usually the next complaint after cold arms. Our guide to football gloves for winter training covers which types work for outfield players without killing their touch on the ball.
The Colour Rule for Match Days
This is where families waste money. Under Law 4 of the Laws of the Game, which grassroots football in England follows:
- Undershirts must be a single colour that matches the main colour of the shirt sleeve, or a pattern that exactly replicates the sleeve.
- Undershorts and tights must match the main colour of the shorts, or the lowest part of the shorts.
- Players on the same team must all wear the same colour of undershorts and tights.
A few football examples of what that means in practice:
- Your club plays in red shirts with white sleeves. The base layer needs to be white, not red, and not the black one you bought for training.
- Your club plays in blue shirts and black shorts. Base layer top: blue. Leggings: black. And if one child turns up in grey leggings while the rest wear black, that breaks the "same colour" part of the rule.
- Your child's kit is short-sleeved. A long-sleeved base layer underneath is fine, as long as it matches the sleeve colour.
How strictly this gets enforced varies. Some grassroots referees check before kick-off, some say nothing, and some leagues are stricter in cup competitions. The safe approach is to ask the manager before you buy, because many clubs have a set base layer colour, and a few sell one through the club shop. For training, any colour is fine, so a black or navy skin is the sensible second one.
Base Layer Tops: Long Sleeve, Short Sleeve or Thermal
Most children need one long-sleeved top in the club's sleeve colour. Beyond that, the choice comes down to how cold your child gets and how much they run.
- Long sleeve, standard weight: the default for matches from October to March. Warm enough under a shirt, not so warm that a busy player overheats.
- Long sleeve thermal: a brushed inside, for training nights, goalkeepers and children who feel the cold.
- Short sleeve: for players who run hot but want a layer under the shirt, or for milder autumn and spring games.
- Mock neck or high collar: a little extra warmth at the neck. A standard collar is all a match shirt needs.
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Teamwear base layers (Joma, Nike Park, PUMA Liga, adidas Techfit) are made to sit under club kits, so they come in the colours clubs actually play in. Fashion-led thermals from general clothing shops often only come in black, grey or navy, which is fine for training and no use on a matchday with white sleeves.
Trust the process. Track the progress.
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Base Layer Leggings and Shorts
Leggings are optional for most outfield players. Legs are working hard all game, so cold hands and arms are usually the complaint long before cold legs. Leggings make most sense for:
- Goalkeepers, especially on 3G, where diving on a cold artificial surface is unpleasant with bare legs.
- Children who play through December and January on exposed pitches and still come off shivering.
- Players who get sore from rubbing at the top of the leg, where undershorts help.
Leggings sit under the football socks, so make sure they are thin enough for the shin pads to still fit snugly. A bulky thermal legging can push a slip-in shin pad out of place. Our shin pads guide covers sleeves and ankle-guard pads that stay put better over a layer.
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Sizing Kids' Football Base Layers
Sizing is where base layers go wrong more than any other piece of kit, because brands size them in different ways:
- By age in years (for example 7-8 or 9-10). Common with PUMA, Joma and many cheaper sets.
- By youth letter size (for example YXS to YXL, or youth S to XL). Under Armour and many teamwear ranges size this way, set against height and chest rather than age.
- By height in centimetres. Common with European teamwear brands.
Measure your child's height and chest and compare it with the chart on the listing, rather than buying the age on the label. Children of the same age can be two sizes apart.
The misconception to avoid is buying a size up to grow into. A base layer works because it sits close to the skin. A loose one bunches under the shirt, rides up at the waist and traps less warmth. It should feel snug without being tight across the chest or under the arms, and a child should be able to swing their arms and lift a knee without the fabric pulling. Because base layers stretch, one bought at the right size in September usually lasts the season.
Snoods, Hats and Neck Warmers
Snoods are not allowed in matches. The International Football Association Board banned them in 2011 on safety grounds, under the part of Law 4 that bans dangerous equipment, and the current law still rules out anything that could be dangerous to the wearer or another player, including head covers with a fastening around the neck. A referee in a grassroots match is entitled to ask a child to take one off.
Training is different. The Laws of the Game govern matches, so whether a snood is allowed at training is down to the club and coach. Many coaches are relaxed about a snood or a beanie hat in a cold warm-up and ask for it to come off for anything involving contact. Ask, rather than assume either way.
For match days, a high-collared or mock-neck base layer gives a little of the same warmth at the neck without the rule problem. A hat is a separate question. Law 4 does allow head covers in matches, as long as they are black or the main colour of the shirt (the same colour for everyone on the team), are not attached to the shirt, and have no protruding parts. That rules out a bobble hat, and a plain black sports beanie is usually fine, though the referee has the final say on what counts as safe.
How Many to Buy and Washing
For most children, two base layer tops cover a season: one in the club's sleeve colour for matches, and one in any colour for training. Add a second match colour if your child trains more than twice a week, so one is always dry.
Washing makes a real difference to how long they last:
- Wash at 30 degrees, inside out, with similar colours. A white base layer for a white-sleeved kit turns grey fast in a mixed wash.
- Skip fabric conditioner, which coats the fibres and reduces how well the fabric moves sweat away from the skin.
- Dry on a radiator or airer rather than a hot tumble dryer, which can damage the stretch fibres.
- Check the care label first, as thermals with a brushed inside can have their own instructions.
Muddy match kit tends to come home in one heap with the base layer stuck inside the shirt. Pulling it out before it goes in the wash saves a lot of grey whites. If winter pitches are leaving more mud than usual, our guide to children's soft ground football boots covers when longer studs are worth it on wet grass.
FAQ
Are football skins the same as thermals?
Close, but not quite. Skins is the general name for any close-fitting base layer worn under a football kit. Thermals are a warmer type of base layer, usually with a brushed inside face. Every thermal is a skin, but a standard skin is thinner and better suited to a full match.
Why do footballers wear skins?
For warmth and comfort. A base layer keeps the arms and legs warm in cold weather, moves sweat away from the skin so the shirt does not feel heavy and cold, and stops rubbing. Professional players wear them in winter for the same reasons a grassroots player does.
Do footballers wear thermals?
Many do in winter, especially goalkeepers and substitutes. Outfield players in a full match more often wear a standard-weight base layer, because a thermal can be too warm once they are running.
Can girls wear the same football skins?
Yes. Kids' base layers are mostly unisex, sized by age, height or youth letter size. Some brands make girls' cuts with a slightly different fit, but a standard kids' skin in the right size works for girls and boys alike, and the colour rule is the same for both.
Should kids wear football skins in summer?
Usually not. A thin short-sleeved base layer can help with rubbing, but in warm weather most children are more comfortable in just their kit. Base layers are for the October to March part of the season.
Are cheap base layers any good?
For training, yes. Unbranded sets and multi-packs keep a child warm and are easy to replace when they go missing. For matches, the teamwear brands are worth paying for because they come in club colours that match the sleeve, and they tend to keep their shape through more washes.
Can goalkeepers wear tracksuit bottoms?
Yes. Law 4 of the Laws of the Game specifically allows goalkeepers to wear tracksuit bottoms. Many grassroots keepers wear padded goalkeeper trousers or base layer leggings instead, which do the same job with less bulk.
