Topeak MidLoader 3 L – lightweight, water-repellent frame bag
The Topeak MidLoader 3 L is the compact solution for those who only want to carry the essentials while bikepacking or touring. With a capacity of 3 liters, it optimally utilizes the space in the frame triangle without restricting freedom of movement or bottle access. Perfect for tools, a spare tube, a mini pump, or snacks.
Made of lightweight, abrasion-resistant polyethylene/nylon, the bag is water-repellent and reliably protects against dirt and splashes. Two water-resistant zippers on both sides allow quick access to the contents, no matter which side you approach the bike from. The simple hook-and-loop mounting system ensures a secure hold on the frame – even on uneven terrain.
Product features
- Compact volume (3 L) – ideal for day trips and short distances
- Highly water-repellent, durable material (polyethylene/nylon)
- Two side, water-repellent zippers for double-sided access
- Velcro mounting system – stable, frame-friendly and quick to install
- Lightweight, slim design for optimal fit in the frame triangle
Technical data
- Volume: 3 L
- Dimensions: approx. 37.5 x 12 x 6 cm
- Weight: approx. 169 g
- Material: Polyethylene / Nylon
- Suitable tube diameters: seat tube Ø 28–60 mm, top tube Ø 45–66 mm, down tube Ø 38–70 mm
- Maximum load: 3 kg
This compact frame bag is perfect for minimalists and sporty riders who are looking for lightweight storage without sacrificing protection and stability.

