Hydration bags are bags that include pockets, pouches or tubes for the storage of liquids (usually intended to be water) for use during athletic activities.
About Outdoor:
Outdoor refers to apparel, accessories, or footwear suitable for use in recreational or athletic activities in open air, outdoor environments. Since outdoor activities such as trail running, climbing, or hiking are often performed on uneven, rough terrain or slippery surfaces, outdoor shoes tend to offer better performance through an array of specific features designed to provide extra support, stability, and traction. Other types of outdoor activities such as camping, fishing, canoeing, backpacking, or kayaking may also require specific types of apparel and accessories.
