Feature: 1. 【Slim Running Belt】Stretchy thin belt bag better fit your body,not shaking no matter how strenuous of the movement.With hook convenient for carry small running accessories. 2. 【Soft and Skin-friendly】Soft fanny packs with high-quality nylon and polyester,elastic material does not constrict your body.Easy wash and quick dry. 3. 【360° Circular Opening】Small fanny packs with 360° circular opening,convenient to take out and put in phone,keys,earphone.Stretchy fanny packs keep items from falling out. 4. 【Breathable and Comfortable】Bum bags for women men with many breathable holes,lightweight and breathable for workout,moisture wicking and quick dry. 5. 【Versatile Use】The running fanny packs for men women can easily create a variety of styles for casual bag,walking bag,workout bag,hiking bag,travel bag and fishing bag,ect. Specification: This slim running belt with skin-friendly nylon and polyester,lightweight and stretchy,fit for most figure and anti-slip.360° circular opening easy for taking and putting phone,breathable hole for most comfort when exercise,ideal for running,walking,workout and hiking. Features: 【Slim Running Belt】Stretchy thin belt bag better fit your body,not shaking no matter how strenuous of the movement.With hook convenient for carry small running accessories. 【Soft and Skin-friendly】Soft fanny packs with high-quality nylon and polyester,elastic material does not constrict your body.Easy wash and quick dry. 【360° Circular Opening】Small fanny packs with 360° circular opening,convenient to take out and put in phone,keys,earphone.Stretchy fanny packs keep items from falling out. 【Breathable and Comfortable】Bum bags for women men with many breathable holes,lightweight and breathable for workout,moisture wicking and quick dry. 【Versatile Use】The running fanny packs for men women can easily create a variety of styles for casual bag,walking bag,workout bag,hiking bag,travel bag and fishing bag,ect. Note:All sizes are measured manually, there may be minor differences, please refer to the actual product you received Specifications: Color: Black / Purple / Rose / Grey (optional) Size: S (300 * 130mm / 11.8 * 5.1in) , M (325 * 130mm / 12.8 * 5.1in) , L (350 * 130mm / 13.7 * 5.1in) , XL (375 * 130mm / 14.7 * 5.1in) (optional) Material: Nylon + Polyester Item Size: 370 * 120 * 30mm / 14.5 * 4.7 * 1.2in Item Weight: 100g / 3.5oz Package Size: 380 * 130 * 40mm / 14.9 * 5.1 * 1.5in Package Weight: 110g / 3.8oz Packing List: 1 * Running Belt Package List: 1 * Running Belt