A swim aid flotation device for supplementing the buoyancy of a swimmer's lower body torso and legs while allowing the swimmer the ability to kick their legs includes a unitary or two part foam member generally in the form of an inverted T-shape with the horizontal part of the T-shape connected to the vertical part of the T-shape. The vertical portion has an expanded top portion and keeps the device positioned between the legs while the horizontal portion straddles the legs. A flexible woven strap connects the device with a loop around the swimmer's body at the waist keeping the device positioned in the crotch area of the swimmer. This provides sufficient buoyancy without need for squeezing the legs together, maintains the swimmer's body in a more horizontal swim position and allows scissor leg kicks or other types of leg kicking motion.