Making simplicity a definite key product benefit, the Caspian tube still has plenty going for it. By focusing on crafting the ideal blend of polyester and polyamide, the Caspian is all about simple but effective protection from the elements. Soft and stretchy, with integrated hexagonal breathing holes to prevent moisture building up, the Caspian is a must-have for when mornings are chilly, and evening comes early. If you stay warm, you stay focused and safe – the Caspian tube will see to that.