This lightweight and stretchy cap fits snugly. Its fabric transfers moisture and dries fast when needed. - Main material: 96% polyester and 4% elastane - Sweatband made of 100% polyester - A total of 76% of the materials are recycled - Machine washable (30ºC) - Reflective print - S/M = 53 - 57cm - L/XL = 57 - 61cm - Made in Spain Complete list of materials used: Crown: 66% Recycled Polyester 23% Polyester 11% Elastane, Visor and undervisor: 86% Recycled Polyester 14% Elastane, Side mesh panels: 94% Recycled Polyester 6% Elastane, Inner sweatband: 92% Recycled Polyester 8% Polypropylene Made in Spain. The factory has an ISO14001 environmental certificate and SGE 21 certificate for ethical and social responsibility. The electricity used in production is made with renewable sources.