Lahinch rainhat in navy is made of a 4-way stretch waterproof fabric that is also highly breathable. All seams are taped with soft and flexible tape. The water repellency treatment on the material is PFC-free. The material is 3-layer with same soft and strechable fabric outside as inside with a functional membrane bonded between layers. This membrane keeps the rain out and allows for Your bodyheat to be transported out to the surface where it evaporates. Elastic tape inside hat with adjustable strap. Abacus logo center front. Size guide: S = 23.22" / 59cm M = 24.4" / 62cm L = 25.6" / 65cm