• No buckle, no straps, all the trims prevent chafing, friction for increase comfort. Fast wicking fabrics. Elastic power mesh. Motion Fit Trail: A new suspension design that allows the pack to move with your body, so you can carry weight more comfortably and with more agility
• Sensifit. Sensi load lifter: Innovative adjustable construction to stabilize weight on the back while running. Also creates permanent pressure on the bladder, improving water flow. Sensi compression
• Splitable volume. Under arm routing. Reflective. Compatibile with Custom System.. 1 safety pocket. 1 zipped back pocket. 1 main compartment. 1 mobile pocket. 1 removable chest pocket
• Soft 1.5l bladder - PVC, Phthalate, Bisphenol-A free. 4D bladder insulated sleeve. Insulated tube. 4D pole holder. Whistle
• Weight:530g (18.7 oz). Dimensions: 43 x 22 x 18. Volume: 12L. (732 ci.). Advanced skin bag size corresponds to tee shirt sizing.

This ultra form-fitting pack for longer, serious trail running comes in three sizes for precise fit. Designed with Sensifit construction, a stretch breathable mesh, it literally wraps the pack and it's contents around the body for a secure, non-binding, abrasion-free fit. Large enough to carry hydration and required equipment for long endurance races. PVC/BPA free 1.5l bladder included.

Please feel free to ask if you have the product which I do not list.I will do my best to provide at competitive price.