Buy luxury arm bags for phone that has the effect and function of night reflection to make the night trip safer. The fabric is breathable and features a headphone hole to listen to music while exercising. It is waterproof, scratch proof. Perfect for any outdoor activities: running, hiking, gym fitness, biking, cycling, riding, camping, and others. Material: Nylon All dimensions are approximate: 4" x 1 3/4" x6 4/4". Shoulder straps and arm pack length: 14".