The first truly specific design for women, ADV SKIN 8 set has a unique shape that eliminates pressure on the breasts when it is synched down. And the integrated soft flasks also have a unique shape, ensuring complete comfort and balancing your gear evenly while you run. It's the ultimate hydration solution for women who demand the best. The most precise fitting running pack specifically designed for women. The front of the vest has a unique shape, and places the specific soft flasks below the breasts to eliminate pressure. More comfortable so women can drink easily and often. The front of the vest has a unique shape, and places the specific soft flasks below the breasts to eliminate pressure. More comfortable so women can drink easily and often. The specific MotionFit designed for women uses a 2 way stretch chest construction, reducing pressure on the breasts for maximum comfort. Our chest appreciates the Adv Skin 8 Hydration Vest that not only carries our trail essentials but lets us breathe comfortably as well. The woman-specific design reduces pressure in front and sets the included soft flasks low, acting as a vest should rather than as a too-tight sports bra.