Kids Base Layers FAQ

What should my child wear under a snowsuit?

Start with a thin, close-fitting base layer, then the snowsuit on top. Every style here is from Deux par Deux: one-piece thermal underwear, two-piece thermal sets, merino base layer sets and thermal leggings, all described by the brand as layers to wear under a snowsuit. Then pick the outer layer in kids snowsuits.

Merino or polyester: which base layer fabric should I choose?

Deux par Deux makes both. The merino blend set is listed as 60% polyester and 40% merino wool with a brushed interior, and other merino sets use soft merino jersey. The mountain print two-piece sets are recycled polyester, listed as moisture-wicking with a brushed interior, and the one-piece suits use thick brushed jersey.

How should kids base layers fit?

Close to the body without pinching, so the snowsuit still zips easily on top. The Deux par Deux recycled polyester sets are listed as fitted and stretchy. Compare your child's height and weight with the Deux par Deux size chart rather than going by age alone.

What sizes do Deux par Deux base layers come in?

One-piece thermal underwear runs from 6M to 14, merino sets are sized in pairs from 2/3 to 12/14, and the two-piece sets, thermal leggings and fleece tops run from 2 to 14. Shopping for one child? See girls base layers, boys base layers or baby girls base layers.

Do I need a mid-layer between the base layer and the snowsuit?

On colder days many parents add one. The Deux par Deux plush pop-over polar jacket is 100% polyester fleece with stretch, a stand collar and a four-snap placket in sizes 2 to 14, and the brand presents it as a fall jacket or a mid-layer under winter outerwear. Finish with kids mittens and gloves.

Do you ship Kids Base Layers to Canada and the US?

Yes. Every order ships from Canada, usually within 1–3 business days, with an estimated delivery time of 6–10 days within Canada and 5–10 business days to the US. Shipping is free on orders of $160 CAD or more in Canada and $160 USD or more in the US; smaller orders ship for a flat $15.95 CAD or $10.95 USD. US shoppers see prices in US dollars, and US orders are subject to customs duties and taxes, which are paid by the customer. See our shipping policy for details.

Can I return Kids Base Layers items?

Yes, within 14 days of receiving your order. Contact us before sending anything back; items must be unworn and unused, with tags and original packaging, and return shipping is paid by the customer. Full details are in our return and refund policy.