Quick answer: for an effective rugby base layer, go for a technical compression fabric (polyester/elastane) that wicks sweat away and keeps you warm without restricting your footwork. For adults, a long-sleeve thermal top, leggings and compression shorts cover most of the body. For kids, a pair of thermal leggings is usually enough to complete their training kit.
Our thermal wear selection
What is a base layer and why wear one for rugby?
A base layer, or thermal underlayer, is the first layer worn next to the skin, under your match shirt or training kit. Unlike ordinary underwear, it is made from a technical fabric (usually a polyester and elastane blend) that does three jobs: it keeps you warm in cold weather, wicks sweat away quickly and provides light compression to support your muscles during exertion.
Rugby is a contact sport played outdoors all year round, so a base layer really comes into its own from autumn onwards: it keeps you warm on the pitch without piling on bulky layers, while leaving you completely free to tackle, ruck and run.
Another often-overlooked benefit: on 3G and other artificial pitches, repeated skin contact with the synthetic fibres during tackles and rucks can cause turf burns, especially on the forearms, thighs and knees. Wearing leggings or a long-sleeve base layer top limits that direct contact and reduces the risk of skin irritation.
How to choose a rugby base layer: the key criteria
- Fabric: a polyester/elastane blend (around 90/10) offers the best balance of warmth, breathability and stretch.
- Fit: a close-fitting compression cut prevents chafing and bunching under your shirt or shoulder pads.
- Sleeves and length: long sleeves for cold training sessions and winter matches, leggings to protect the legs, compression shorts as a lighter layer under your playing shorts.
- Playing surface: on artificial pitches, opt for long sleeves and leggings to reduce turf burns.
- Colour: boutique-rugby.com base layers, in both adult and junior sizes, come in several colours (black, navy, blue, red, white). Many players and clubs look for this so they can match their base layer top or leggings to the main colour of their shirt and shorts, for a coordinated kit from top to bottom.
- Care: machine wash at a low temperature to keep the fabric stretchy for longer.
- Body shape: always check the size guide on the product page, as the compression fit leaves little room for error.
Junior base layers: our selection
Many parents don't realise this: a rugby shirt on its own, even a long-sleeve one, offers almost no protection from the cold. It is a thin garment designed to breathe during play, not to keep warm. On a cold day, a child wearing only their shirt can quickly get chilly, especially at the start of a session or while waiting on the sidelines. A base layer is therefore not just an extra: it is the piece of kit that genuinely keeps your child warm at training and on match day, under their club shirt.
Like the adult range, the junior leggings come in several colours (black, navy, blue, red, white), handy for matching your club's shirt or shorts.
Kids' black thermal rugby leggings
Designed specifically for young players, these junior leggings in 90% polyester / 10% spandex keep out the cold while moving with every step in matches and training. A must-have for any junior training kit.
Price: €19.00 €13.99 (-26% Start of Season Selection)
The boutique-rugby.com coach's tip
Never wear a base layer that's too loose: the closer the fit, the better the compression supports your muscles and regulates your temperature. If you're between two sizes, go for the smaller one rather than the larger.
FAQs
What is the difference between thermal leggings and compression shorts?
Leggings cover the whole leg down to the ankle, while compression shorts stop at mid-thigh. Leggings are better suited to very cold matches, shorts to training sessions in milder weather.
Should you wear a base layer in summer?
It isn't essential in summer, except for players who want the compression effect for muscle support, regardless of the thermal benefit.
How should you wash a base layer so it lasts?
Machine wash at a low temperature without fabric softener (which reduces the fabric's technical properties) and air dry to preserve its stretch over time.
Are junior base layers made from the same fabric as adult ones?
Yes, the composition (polyester/spandex) is similar; only the cut is adapted to a child's build.
Can you wear a base layer under your official club shirt?
Yes, that's actually the most common use: the thin compression fit slips under the shirt without adding bulk.
Does a base layer protect against turf burns on artificial pitches?
Yes, partly: by covering the areas most exposed to friction (arms and legs), a base layer reduces direct contact between skin and synthetic fibres, lowering the risk of turf burns from falls, tackles and rucks.
Size guide
Each product page has its own size guide (the "Size guide" button). Because of the compression fit, we recommend going by your actual measurements rather than your usual everyday clothing size.
Explore the full boutique-rugby.com base layer collection, or read our guide to kitting out your child for the new rugby season: all the essentials to complete their kit.
