Size: S/M = 58-59cm, L/XL = 61/62cm | Material: Lightweight, quick dry | Chin Buckle: Fully adjustable. Quick release | Back Strap: Velcro head adjustment | Internal Headband: Padded neoprene head band for comfort | Ear Panels & Strapping: Padded neoprene for comfort and flex. Side mesh vents release water after duck dives and wipe-outs | Warranty: Guaranteed against faulty workmanship or defective materials for 12 months from date of purchase.