Luxurious material, outstanding texture Top fabric combination: the top of the cap is made of high-density waterproof Oxford cloth/imported lambskin (optional), which is windproof and wear-resistant and comes with a sense of luster; the brim of the cap is made of selected thickened memory cotton + three-dimensional steel core, which is stiff and not easy to be deformed, and it shades the sun and modifies the face shape at the same time. Upgraded details: lined with breathable mesh + antibacterial sweatband, long wearing not stuffy; brim edge car line precision, walking line uniformity without miscellaneous lines, highlighting the quality of craftsmanship. Intelligent adjustment, comfortable fit Magnetic/knob dual adjustment system: Magnetic buckles: one press to close, one-handed operation, suitable for 52-62cm head circumference, suitable for small head/big head/wig wearers; Knob Adjustment: 360 infinitely fine-tuned to accurately match the curvature of the head shape, stable and non-shaking during strenuous exercise or cycling. Removable cushion lining: extra thick/breathable lining, universal for all seasons, windproof and warm in winter, sweat-absorbing and quick-drying in summer. Upgraded functions, practical and aesthetic at the same time UV400 sunscreen coating: the brim is embedded with sunscreen black technology, UV blocking rate of 99%, outdoor travelling without fear of the scorching sun; Windproof rope snap: removable windproof rope + metal lock buckle, hiking/island tour and other strong wind scene solid wear; Reflective strip design (some models): reflective strip embedded in the side of the brim, safer for night running/riding.