Updated pattern with independent strap included. Allows for better fit/adjustment on the top tube. Grip-Tac strip on the bottom spine portion to maintain position on top tube. Dimension Polyant XPAC VX-21 waterproof fabric exterior. Yellow nylon pack cloth interior. Foam cushioned between fabrics. Emergency whistle zipper pull. #8 water resistant zipper. GripTac lined 2" strap to secure to frame. 3 position velcro strap for steerer/stem attachment. Interior divider pocket. Used by Neil Beltchenko during his CTR record run in 2016 as well as his 3rd place finish in Tour Divide in 2015. Tied for first place in Bikepacker's Magazine Top Tube Bag Throwdown.