Kelty Siro 50 Hiking Backpack<div style="text-align: left;"><strong>[Product Information]</strong><ul><li><span class="a-list-item"> Nylon 66 330D Mini Rip PU </span></li><li><span class="a-list-item"> Lightweight and streamlined for going the distance </span></li><li><span class="a-list-item"> Stretch water bottle pockets </span></li><li><span class="a-list-item"> Dual trekking pole/ice axe attachments  </span></li><li><span class="a-list-item"> External hydration sleeve (reservoir not included)  </span></li><li><span class="a-list-item"> Dimensions: size (L x w x D) 27 x 13 x 10 in， weight 3 lbs 2 oz， volume 50 L， torso size 18.5 - 20.5 in， optimal carry weight: 25-30 lbs </span></li></ul></div><img src="http://ecx.images-amazon.com/images/I/415dx60R4fL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51yoNDVibNL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51m%2BLblSYPL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/415dMQBoPzL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/516CbolIw-L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41bhrdKtabL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51KIyIkzAdL.jpg" noproxy>