Long and narrow flotation bags fit on either side of a kayak's center support pillar.
The Infinity series bags are a 10-gauge Urethane material that won't leak or delaminate!
Standard Stern Dimensions inflated: 33.5"L x 10"D x 13"W, 3"W at tip.
Bow Dimensions inflated: 23"L x 7.5"D x 10"W, 3"W at tip.
Rodeo Stern Dimensions inflated: 28"L x 9"D x 13"W, 3"W at tip 
There are many, many kayak models. You will need to measure the space in your kayak that you want to fill in order to determine which of our flotation bags will work for you. Choose bags that size or larger.