COMPLETE XR DIVING SET – The Mares Tactical Green Single Backmount Set includes everything needed for XR diving, featuring a 140 N (14.7kg) single tank donut, 3mm aluminum backplate, and 6mm D-rings; Designed for tech and cave divers, this dive BCD provides reliability and durability for underwater exploration FULLY ADJUSTABLE HARNESS – This tech diving set includes a standard webbing harness with a fully adjustable design, making it a one-size-fits-all system; This ensures divers of all sizes can enjoy a customized, secure fit, offering maximum comfort during deep dives or long underwater excursions K-STYLE INFLATOR WITH FLEXIBLE HOSE – Featuring a durable K-style inflator with metal buttons and a stretchy, oval-shaped, corrugated hose, this Mares BCD for tech diving allows for smooth and precise buoyancy control while offering the flexibility needed for unrestricted underwater movement SECURE TANK STRAPS WITH ALUMINUM BUCKLES – The Tactical Green Single Backmount Set includes 2 sturdy tank straps with silver aluminum buckles and black flat-head bolt screws, ensuring your tank remains securely fastened throughout your dive LIGHTWEIGHT FOR TRAVEL – Weighing only 3.1 kg, this backmount set is perfect for divers who need to travel light without sacrificing performance; Its low weight makes it easy to carry and transport, making this scuba BCD ideal for tech divers who frequently travel for diving expeditions