The PFDiva"s unique ADJUST-A-BUST fit system provides support for women"s bodies where it counts-on the inside. The two memory foam pads are designed to be positioned under the bust. They prevent "the girls" from pushing out to the sides, plus fill the gap under the bust to better distribute the pressure when you clinch down tight for that performance fit. Want more room for layering when it"s cold? Just remove the pads-YOU have the freedom to choose. Other women-friendly features are the sports bra inspired racer-back shape, Z-STRAP closure, padded adjustable shoulders, two large cargo pockets, a handy kangaroo pocket for lip balm, reflective striping front and back, front lash tab, and a hat hanger loop so you don"t loose your favorite hat Comfort and style for the woman who enjoys center stage. SPECIFICATIONS: USCG: Type III, Buoyancy: 16 lbs. 8 oz., Sizes: S/M (29"-40"), L/XL (40"-48")