SWEATPROOF All parts of the running belt (earbuds jack, elastic strap and zipper) are waterproof, sweatproof and washable. Sports Belt was made of soft and breathable material and waterproof zipper. The fanny pack helps you protect the valuables inside from sweat and rainADJUSTABLE ELASTIC BELTNo Bulky. Sports hydration running belt is lightweight, comfortable and snug around waist. With adjustable buckle, it doesnt move around when you are running. With its adjustable length from 24" to 47" it is suitable for all family membersREFLECTIVE STRAP AND WATER BOTTLE HOLDER The belt reflective strap enhances the visibility in low light condition and keeps you safer when running and walking at night. Comes with a Holder that will fit most smaller water bottles to allow to bring a drink for those long runsSUITABLE for OUTDOOR SPORTSRunning waist pack Designed for all kinds of fitness, outdoor sports and activities including: running, casual walking, hiking, climbing, just to name a few. This waist pocket stores your articles safely and keeps them handy. Perfect gift idea for yourself or someone you do care about.