To make sure you stay warm and dry, we recommend using the 3-technical-layer rule:
- Layer 1 or base layer (such as this undershirt), to stay dry.
- Layer 2 or an insulating or thermal layer, for additional warmth.
- Layer 3 against bad weather.

Wool is the best material you can choose for your baby for their winter underwear. Indeed, it is a material whose natural properties give your child good thermal regulation. Merino wool is light, soft, doesn't itch and doesn't hold onto moisture.

Our yarn development team met with the breeders in South Africa to ensure that the wool is obtained without breaching animal welfare regulations. Unlike some countries that export merino wool, South Africa prohibits mulesing. A painful surgical procedure for sheep, to prevent parasites from developing on the animal. It formed partnerships with breeders to ensure the long-term viability of the sector in line with your ethical and technical expectations.

The cut of the MERIWARM baby ski/sledge technical base layer (or leggings) is REGULAR.
This is a classic straight cut in a stretch knit fabric that fits the body shape of every baby. These under-trousers or leggings provide good support thanks to the wide soft-touch elastic.