The SMB HYBRID 3.3 from OMS is unique in the fact that it can be inflated in 3 ways; with an octopus into the opening on the bottom through a one-way duckbill valve allowing air in only one direction, with the inflator valve through your inflator/drysuit quick disconnect hose or by oral inflation with your mouth. Available in orange, yellow or pink and is 1 meter long.
