EVERYTHING YOU NEED, MINUS THE SHOES. The Nike Kiger 4.0 Vest can hold up to 3 liters of water to help keep you hydrated on the trail or on your run. Form-fitting, lightweight fabric is ultra-breathable and won't slow you down. Designed with an eye for all the essentials, this vest features trekking pole holders and a whistle. 5 secure front pockets hold both 750 ml flasks and personal items, while the rear compartment is able to hold a 1.5L hydration bladder. Benefits: Adjustable shoulder, chest and side straps let you create a custom, stable fit. A safety whistle and key clips on the vest give you a sense of having what you need when you need it. Trekking poles can be conveniently stored at the lower back. Product Details: Includes 2 750 ml flasks and a straw extender. Hydration bladder sold separately. Body: 86% polyester/14% spandex. Lining: 74% polyester/21% nylon/5% spandex. Hand wash. Imported. Style: N1002378; Color: Black/White; Size: M/L; Gender: Female; Age Group: Adult | Nike Kiger 4.0 Women's Running Vest in Black, Size: M/L | N1002378-062