Our custom cold packs come in two sizes and are covered in a stretchable moisture wicking felt material that keeps the head dry when in use.  One side has a smooth Velcro that allows for the packs to be placed anywhere inside the helmet for your convenience. They have a very thin design that conforms to the wearer’s head and does not add any weight or bulk when using.
For best results, keep them in the freezer for 30 minutes before use.