Constructed from tough PVC tarpaulin

Min temperature: -40 Degree C/-40 Degree F

Ventilated back panel with air-flow design

the Elton is very comfortable to hold

End haul handle

SmarTube® size-m-l Constructed from tough PVC tarpaulinSmarTube is a simple, reliable, and cost effective hydration accessory line that transforms almost any drinking bottle from standard water and beverage bottles, through specialty outdoor bottles like Gatorade, Powerade and Nalgene. Theres no need to fill, rinse and dry bladders after use, or clean them before use. Simply take a mineral water bottle, connect the SmarTube and you are ready to go! Being safe, hygienic, cost effective and sensible,