I bought two of these very expensive life-jackets for the back tow function, which I thought was really valuable. It was when I went to fit the MOB1 location device with strobe light that I found that these life jackets are designed so that this safety device cannot be fitted. They life-jacket outer skin is just too small to accommodate one of these. Falling off a boat is one scenario, getting found in the water after a boat catches fire or sinks is another real issue. Until they go back to the drawing board and make this life-jacket able to accommodate a location device, I would not recommend one for the serious coastal sailor.