The Ultimate Performance Arrow 3 Race Vest comes with the following features: Designed in a race vest style it can be easily adjustable so that it hugs the body making it comfortable over the longer distances. The Twin secure pockets and twin front stash pockets are easily reachable for quick access. Plus the two 500ml flexi flasks provide much needed hydration. The main pocket on the back has space for 3litre hydration bladder (bladder not included). Included is a storage bungee rack system to hold lightweight tekking poles.