Bag size ( L x H ): 39 x 41cm / 15.35 x 16.14 inches, Only 8.82oz Running Hydration Pack Super Light. Breathable Running Hydration Vest Men's Women's. 5.5L good volume race vest only 250g, make your running more flexible and smooth. Soft and Comfortable material,perfect fit your body keeping the pack from bouncing while running. Air mesh back and shoulder pad, breathable and relieve sweat effectively. 2L Water Bladder and 2Pcs 250ml Water Bottles Equipped:(Optional) Water bladder - 2L. Food grade , Durable, built for a Lifetime of Tough Use. 2 water bottles - 250ml. Running hydration pack bottles fit easily into a main warehouse, and NOT LEAK. The best size fits perfectly for running, biking, hiking and other outdoor adventures. All-in hydration backpack.Stay hydrated while you enjoy your outdoor sporting.

• ★Comfortable Fit Vest Pack: Fully adjustable shoulder and chest straps that guarantee the perfect fit, keeping the pack from bouncing while running. Designed with a unique padded back section to allow airflow between your back and the pack.Soft mesh on back and shoulder straps maximize breath-ability.
• ★Fit You Well: Ergonomic designed vest-shaped bag coming with adjustable waist strap and high elastic chest strap,two sizes for your option.This backpack can be used for more than running and hiking.It is suitable for almost all outdoors activities such as running, riding, camping, marathon, etc.

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