Travel Straps™ September 5, 2018 S Innovations Prepare your bag for air travel. Boot Trekker, Thermal Trekker, SP RXL and SP PRO are equipped with airline baggage check straps: shoulder straps are tucked behind the back panel; and the waist belt is either removed or tucked behind the back panel. BTSPPSPRXLTT More Stories Open Pack Design™ Optimal storage, easy access. Kulkea’s Speed Line is designed around a jumbo wide-mouthed main pocket… Standing Pad Keep Feet Clean and Dry. The padded, waterproof tarpaulin foot pad for booting up. SP… Lip Balm Pouch Mind the Chap! Conveniently located Shoulder strap pouch for easy balm access.