The Sea Wolf is a clever and comfortable PFD designed primarily for the touring market, the Sea Wolf is based on the same foam template as the Green Jacket but has the added bonus of a huge clam shell front pocket perfect for all the items you never knew you needed on the river or sea. This PFD although not super cheap is fantastic I like it so much I brought one!   

What they say:

A full-featured vest for sea kayak pros, the sea wolf combines our foam tectonic platform with all the essentials and storage space required by expedition level paddlers. Features include:  Large zippered Clam Shell front pocket, Hydro-Vent back to keep user hydrated and cool, Stretch mesh side pockets, fleece lined hand warmer sleave, rear strobe light attatchment, reflective trim on front/back/shoulders, ultra strong rip stop shell, and light weight PE foam construction. Compatable with astral quick release belt for towing applications. Easy side entry. 

Astral Size Chart:

Size	S/M	M/L	L/XL
Chest	31 - 37"	38 - 44"	45 - 51"

Measured at greatest torso circumference.