Features: Disposable shower cap material, 0.03mm/0.001inch ultra-thin foil, heat insulation, 5mm/0.19inch rubber bandwidth, keep your hair firm when showering or wearing. The stitching has good elasticity and leak-proof design: the elastic parts are correctly stitched, the fashion is reflective silver, dustproof, anti-dirty, and heat-insulating. Each piece is packaged in a small, transparent pouch for women to clean or bath for a single-use. Suitable for all hair lengths and thicknesses, keeping your hair from falling during beauty. Suitable for travel, hotels, household goods, and hair salons, good insulation performance. Specification: Material: aluminum foil Size: Approx. 30cm /11.81inch(top diameter) 12cm/4.72inch (elastic diameter) Weight: about 6.5g Packing List: 1*aluminum foil cap Notes: 1. Color may vary slightly because of the difference in display screens. 2. Please allow 1-3mm errors due to manual measurement.