Mammut Tweak Beanie Marine/White One Size. The beanie looks stylish with an embroidered MAMMUT logo. The inside is lined with cozy fleece. Specifications for Mammut Tweak Beanie: Manufacturer: Mammut Gender: Unisex Age Group: Adults Hat Size US: One Size Fabric/Material: 50percent Wool 50percent Acrylic Application: Hiking Weight: 40 g Features of Mammut Tweak Beanie Wool-acrylic blend combines comfort and functionality RWS-certified wool to protect animal welfare Fleece inner layer made from 100percent recycled polyester Package Contents: Mammut Tweak Beanie Mammut 1191-01352-5899-1: Tweak Beanie Marine/White One Size