Packs small and retains its shape. Advanced technology designed for convenience, can be folded inside a hand without losing its shape once released. Knitted polyester fabric with a special honeycomb construction and highly breathable properties. It dries quickly providing comfort during high intensity activities. Small silicone adjustable drawstring for an optimal fit. Trimming system in the rear side allowing a good fit for different sizes. UPF50+ certified sun protection against ultraviolet (UV) radiation produced by the sun. Samples of fabrics tested for UV protection in accordance with the international standards. 87% Polyester 13% Elastane Product Code: 119501. 555. 10. 00