Using the Inov-8 Race Ultra Pro 2-in-1 Vest is easy. First, adjust the straps to get a comfortable and bounce-free fit. You can attach or remove the 10-litre pocket based on how much stuff you need to carry. Fill the 500ml Ultraflasks with your preferred drink and adjust the tube length. You can choose to wear the flasks upfront or stash them lower to the sides. If you want to use a bladder, just hang it on the hanger in the vest. When storing collapsible poles, you can place them horizontally or vertically at the front or back using the mounts. For short runs, you might not need the 10-litre pocket. For longer races or multi-day adventures, use it to carry extra supplies. When it comes to maintenance, hand wash the vest in cold water with mild detergent. Let it air dry. Don't use bleach or machine dry it as it can damage the materials. Also, make sure to clean the Ultraflasks and the Speedcup regularly to keep them hygienic.