The best T3 technology also available for the youngest skiers at home.Features:- Sock Height: Over Calf- Cushion: Shin & SoleSpecifications:- Sock Content: 38% PrimaLoft®® Eco Polyester Yarn, 37% Merino, 15% Nylon, 10% Ea. LYCRA®TECHNOLOGY:PRIMALOFT® ECO:- EARTH FRIENDLY PERFORMANCE: PrimaLoft®® Eco polyester yarn features a blend of 30% PrimaLoft®® fibres and 70% PCR materials, providing an environmentally sustainable alternative to yarns made solely from virgin fibre. Used as the next to skin layer in our merino based Lorpen Tri-Layer socks, PrimaLoft®® Eco is soft, non absorbing and very effective at moisture transport.MERINO WOOL:- Merino wool is a finely crimped and soft wool with staples (fibre lengths) that are commonly 65 100 mm (2.5 4 inches) long and less than 24 microns in diameter. The core of a merino fibre is hydrophilic (water retaining), and is breathable. The fine micron diameter ensures it feels soft and comfortable next to the skin. Merino has the ability to help keep the foot warm in winter and cool in summer.