Ortlieb Back-Roller Core

It is fully waterproof. With an IP64 rating and a roll-top closure, it is designed to keep your gear completely dry even during heavy rain or splashes.

The Quick-Lock2.1 system is highly adjustable and compatible with almost all standard rear bike racks on the market. It features sliding hooks that you can position to fit your specific rack's tube diameter.

With a 20-liter capacity, it is spacious enough for a laptop, a change of clothes, and lunch for a commute, or a decent amount of gear for a weekend tour. Just keep in mind the maximum load limit is 9 kg.

No, the Core model is designed as a streamlined, essential pannier and does not include a shoulder strap. It is intended primarily for mounting on the bike, though the top handle makes it easy to carry by hand.

It is versatile enough for both. While it is a great entry-level commuter bag, its durable PVC-coated polyester construction and waterproof design make it perfectly capable of handling the demands of extended touring.

The bag features attachment points that allow you to add optional accessories, such as outer pockets or bottle cages, if you find you need extra organization or storage space beyond the main compartment.