WR MaterialMade of high quality polyester, water resistant and durable.prevent your bike bag from getting wet in rainy days when cycling. 3 in 1 bagSaddlebag bicycle bag with 3 in 1 multi-functional design.The bag on both sides is together, and the top bag can be detachable as a backpack.Shoulder strap included, the top bag can also be used as a shoulder bag. Large capacity :Two side panniers: 10.2" in L * 6.9" in W * 12.6" in H one of each, one backpack (top pannier): 15.7" in H * 14.6" in L * 6.3" H-shaped straps, which are compatible with all cycling necessities like thin clothes, shoes, toiletry bag, laptop, bicycle repair tools, etc. Removable shoulder strap:There are an adjustable nylon shoulder strap in the package, with easy locks on both sides, the strap can be installed and removed effortlessly, and you can carry the bike bag on your shoulder without cycling. Easy to install:Equipped with double hooks and buckle on the back, the bike pannier bag can be attached to the rear tire carrier effortlessly, and you can attach the top pannier two side panniers through loops.70L bicycle pannier 3 in 1 bicycle bag bicycle rear rack bag trunk bag carrier saddle bag bicycle luggage Made of high quality polyester, water resistant waterproof and durable. Attach a rain cover. prevent your bike bag from getting wet in rainy days when cyclingBike pannier with 3 in 1 multifunctional design .The bag on both sides is together, and the top bag can be detachable like a backpack.equipped with double hooks and With a buckle on the back, the bike pannier bag can be attached to the rear tire carrier effortlessly, and you can attach the top pannier to two side panniers via bucklesThere is an adjustable nylon shoulder strap in the package, with easy locks on both sides, the strap can be installed and removed effortlessly, and you can wear the bag over the shoulder without cycling Install steps Fixed bagHold the handle and fix the shelfFixed under the velcro strapComplete saddlebag installation waterproof Made of high quality polyester, water resistant and durableAttach a rain cover. prevent the bike bag from getting wet in rainy days when cycling Unique design The bag has elastic cords that can hook a rain cover and wet clothes.Side pockets can hold water bottles, gloves, hats, etc.The hook is installed with pneumatic rivetsReflective strip and taillight lanyard, more safety on the bike