The actual single side capacity is 25-28l, which is suitable for models with sufficient rear seat size, including those with DIY or side frame. Please consider it according to your own actual vehicle model and the detailed pictures to avoid unnecessary return Wild heart produces strong outdoor waterproof bag products. Outdoor firmness is considered at each connection point, including invisible materials inside, 100% new PE plastic particles for PE board, and thickened 1.5mm for all webbing The main load-bearing fastener is made of famous brand UTX d-flex fastener In addition, the later design has also been improved by adding multiple spare fixed points This buckle has secondary locking function The short-range display of the connecting piece, and the design on the connecting piece also adds a ring for auxiliary rope binding The biggest feature of this type of bag is that the material used is very thick. The intermediate layer of 1000D is used. The total thickness is 0.7mm. It will not be easily worn out when contacting with the ground. The whole bag is made of thick material, with a weight of 3.3kg UTX d-flex fastener is used as the main load-bearing fastener The other DIY way There is a Velcro at the entrance of the bag Designed spare, other free way double ring, can wear binding rope You can buy an extra bind rope 1 inch wide（ asin:B07SQ9BTHC ）, or other models The other way to bind it waterproof motor bag travel motor bag gym bag, bicycle bag bicycle bag bicycle pannir bag Add to Cart Add to Cart Add to Cart Buying Options Buying Options Customer Reviews 4.6 out of 5 stars 540 4.6 out of 5 stars 355 4.4 out of 5 stars 242 4.6 out of 5 stars 60 5.0 out of 5 stars 7 Price $76.00$76.00 $46.55$46.55 $57.00$57.00 — no data — no data Material Thickening material, thickness 0.7mm,Middle layer is 1000D mesh middle layer using 500D 18*23 polyester high density mesh yarn PVC waterproof material PVC500D PVC500D Color black yellow balck white yellow Capacity 55L 40L 30L 18L 25L waterproof ✓ ✓ ✓ ✓ ✓