This PFD was designed for Vantage high back seats on Hobie Mirage Kayaks. The flotation in the badk is thin for more comfort wile seated and helps to prevent the vest from riding up as you pedal. A vent along the spine adds to the comfort. Front zip entry for easy on and off. Large pockets on the front for easy storage and access of small items. High waistline cut so the vest does not ride-up wile pedaling. Huge arm cutouts and the short waist allow excellent freedom and morvement. Adjustabel side straps offer enough size variation for many layers underneath or none! Reflective tapes for visibility during low light conditions. back logos vary between “H” and Penguin Logo.