Vans Core Basic Beanie in Black Heather | One Size The new Vans Core Basic Beanie has been designed from 100% Acrylic material. The Beanie is a 100% acrylic slouch beanie with a Vans OTW clip label.It is super warm, soft and comes in a stylish design that fits the head perfectly. Made to fit most head sizes this beanie is the perfect thing for winter in the UK. Keep warm and snug on any adventure this winter! Vans Core Basic Beanie - Black Heather