28L Large Capacity -- Eyein bicycle pannier bags includes two bike rear side zipper bags with dimension of H30 * W30 * D14cm (11.8 * 11.8 * 5.5inch) for each bag. Plus the 2 visible mesh pockets on the outside, the pannier bags provides as large as 28L storage space, which perfectly solves the problem of inconvenient carrying when going out. Water Resistant Durable Fabric-- Eyein bike bags adopted 600D twill reinforce polyester fabric, which is durable, tear resistant and scratch resistant. The bicycle trunk is thickened to provide cushioning and reduce vibration when driving on uneven roads. The PU coating layer inside makes it water resistant, help to protect your belongings from wetting in light rain. Multi-Functional Application-- The four compartments of the bike rack bag provide plenty of room, easy to store all your essentials, such as bike repair tools, tire pump, water bottle and change of clothes, ideal for long expedition touring trip or grocery shopping. Two back straps will secure the lower portion of the pannier and keep the shape of the bike bag. The bike tail lights can be hung on the back straps. Rubbing Proof Design -- The two sides bag both with angled corner on the front bottom, keeps the bicycle bag from interfering with pedaling and avoid rubbing. The 6 point strap installation keep the pannier secure fixed on the rack. It can be installed easily on all types of bicycles with backseats, such as mountain bikes, road bikes, recreational vehicles, folding bikes, etc. Widen Reflective Strap-- Extra wide light reflective trim at back of the bike rack bag, help to increase the visibility in night time and ensure riders safety. This ergonomically designed bike pannier bag is a very good gift for your family.