This 5L backpackfeatures a padded sleeve designed to fit a compatible hydration system(Not Included)? bottom essentials pocket with a storage net to hold helmets? dual hipbelt small pouch to accommodate your phone? players? keys? etc.. With such versatility in usage and durability in raw material? it is a wonderful backpack for your short-term hiking? climbing? trekking? or any other adventurous activities.<br /><br />Features:<br />RIPSTOP AND WATER REPELLENT: Made of anti-tear polyester fabric(lining)? rip stop and water repellent? to ensure long-lasting performance.<br />VENTILATED BACK SYSTEM: Cooling back panel with mesh shoulder straps constructed with breathable synthetic material for comfort.<br />STORAGE COMPARTMENTS: One main compartment with a padded sleeve to fit a compatible hydration system; A bottom essentials(helmet holder)pouch; Two small pouches on the hipbelt panel to accommodate phones? MP3 players? keys? small items? etc.<br />FRONT? BACK REFLECTORS: Several reflectors on the back and front of the bag to improve the safety at night cycling.<br />CONVENIENT TO OPERATE: High-tenacity zippers with pullers for convenient opening or closure and longtime use.<br />Note: Others except items listed in the package list are ONLY for reference.<br /><br />Specifications:<br />Color: Blue / Grey / Green (optional)<br />Material: Tear-resistant nylon fabric + Anti-tear polyester fabric<br />Capacity: 5L (all pockets included)<br />Item size: 28 * 6.5 * 39cm / 11.0 * 2.6 * 15.4in(L * W * H)<br />Item weight: 530g / 18.6oz<br />Package size: 41 * 29 * 4cm / 16.1 * 11.4 * 1.6in<br />Package weight: 560g / 19.7oz<br /><br />Package List:<br />1 * Outdoor Backpack<br />1 * Helmet Holder<br><img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y4335B/Y4335B-1-15b1-NSLJ.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y4335B/Y4335B-1-15b1-Dtpe.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y4335B/Y4335B-1-15b1-IPtM.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y4335B/Y4335B-1-15b1-b2Vc.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y4335B/Y4335B-1-15b1-EQbX.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y4335B/Y4335B-1-15b1-ADA7.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y4335B/Y4335B-1-15b1-2R8J.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y4335B/Y4335B-1-15b1-vj5K.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y4335B/Y4335B-1-15b1-v3OM.jpg" /><br>$$<img src="//img.tomtop.com/product/xy/2000/2000/p/gu1/Y/B/Y4335B/Y4335B-1-15b1-O22T.jpg" /><br>