This large, 7 ft (2.1 m) SMB is the one you want when you know that you will be diving in a location known for strong wind and currents. The large diameter will help keep it vertical in adverse conditions and and will be more easily seen by boats.

7 ft (2.1 m) long x 15 in (381 mm) circumference, 5 in (127 mm) diameter

Mil-Spec, urethane backed, nylon material

SOLAS reflective tape on both sides for maximum visibility

Elastic loop at top for chemical light attachment

Stainless steel D-ring at top for slate attachment

Lifting handle at top of tube

2 in (50 mm) Diameter overpressure relief valve with pull for manual release

Combination oral and BC QD inflator

Anti-spill bottom with baffle to allow easy fill from any second stage

Lifting strap with stainless steel D-ring at bottom

18 in (46 cm) step-thru leg harness with stainless steel D-ring

50 lbs (23 kg) of positive lift