Rooster Polypro Socks for Juniors is constructed from a combination of Polypropylene (94%) and Elastane (6%). The inner fabric surface has been brushed to give it a thick, fleece-like, high quality texture which feels incredibly warm and soft next to your skin. This provides excellent thermal qualities making it the perfect base layer. Polypropylene is naturally hydrophobic, which means the fabric feels remarkably dry, even when wet. You can even wear these socks underneath Hot Socks to create a fantastic heat barrier without adding bulk to the foot.FeaturesBreathable polypropylene material wicks moisture away from the bodyBrushed fleece inner providing excellent thermal qualitiesDries very quickly after use and washing due to the hydrophobic (water repellent) nature of polypropyleneWear under Hot Socks as an insulating layer during winter for incredible warmthIdeal for a range of outdoor activities in the colder months including road cycling, mountain biking, kayaking and skiingOne sizeComposition: 94% Polypropylene, 6% ElastaneSizingThe material exhibits some stretch and a single sock size will span a number of shoe sizes.EU Shoe SizeUK Shoe Size33 – 361 – 3