FEATURES: -Flex Mono Mesh compression waist belt provides secure and breathable fit -Woven Mono mesh back panel conforms to your body -Individual compression bungee bands add extra attachment points to hold trekking poles or an extra piece of clothing. -Waist belt is construction is Velcro to allow for customizable adjustments with key pocket. -Pair with the Adventure Pocket to carry everything you need on your next adventure Interior zip secure pocket with an additional key clip (will be included with this item) -With fit a 500ml Hydrapak bottle in the main compartment. -Extra interior zippered pocket with additional key clip. _____________________________________ *Will also include the “Adventure Pocket” Description taken from the Ultimate Direction site: “Slide the Ultimate Direction Adventure Pocket onto any Ultimate Direction waistbelt to receive additional storage options for your next long-distance run. The mesh construction provides sufficient breathability for a dry and comfortable run, while the pockets offer ample space for a large phone, gels, or other important on-the-run essentials.” Other Features: -1 large zippered pocket ideal for a phone. -2 additional loose pockets on the front (1 larger than the other). Sizing S/M: 26”- 31” Please let me know if you have any questions. This item is in good condition and has only been worn/washed a couple of times. No tears/holes and no stains. Thank you!