Once you run with a UA Speedpocket, you'll wonder how you ever ran without it. It expands to hold even a plussized phone, keeps it secure, and won't let it bounce.- Lightweight stretch woven fabric is comfortable and durable with side mesh panels for added ventilation.- Expandable center-back waistband pocket is water-resistant and keeps your phone secure, with no bouncing.- 4-way stretch material moves better in every direction.- Built-in brief for enhanced coverage.- High-rise, soft knit waistband with internal drawcord.- Fitted fit: Streamlined fit that’s not too tight or too loose.- 100% Polyester.- Machine washable. Ref: 1379355963.