Eyein Bike Rear Rack Bag, 12L Waterproof Reflective Bicycle Trunk Bag, Cycling Rear Seat Carrier Bag Backseat Storage Luggage with Water Bottle Holder, Shoulder Strap for MTB Bike E-Bike

【12L Large Capacity and Multiple Pockets】 Dimension of 14.96*6.3*8.27in (38*16*21cm), large enough to store wallet, phones, towels, clothes, bike tools, water bottles, maps, food, etc. This under seat storage bag contains a main compartment, 2 side pockets, a water bottle holder, a top zipper pocket and 2 inner mesh pockets to keep your essentials organized.
【Rainproof & Built to Last】- The bike trunk pack is made of 900D Oxford fabric coated with superior PU film, which is rainproof and easy to clean. The laminated waterproof zipper also help to prevent rain from penetrating in. It comes with an extra rain cover for heavy downpours.
【Large Reflective Area】 Unique designed large area reflective fabric to increase visibility at night, together with the rear loop for taillight(not included), WOTOW bike rack bag ensues bikers a safer night riding.
【Also a Chest Bag】Not only can be used as bike bag, but also it is a stylish commuter chest bag when taking out the hidden shoulder strap from the bottom pocket and get it hooked in other end loop. Moreover, it come with a comfortable handle to make it a handbag. Easy to take it away anytime when finish your riding.
【Tool Free Installation】 This bicycle rear seat bag come with 4 adjustable hook and loop fastener straps, make it easy to be installed and unloaded in seconds, suitable for most bicycle racks, such as mountain bike, road bike, electric bikes.