Ortlieb Dry-Bag PD350 waterproof dry bag

Ortlieb Dry-Bag PD350 — The Everyday Waterproof Dry Bag

The Ortlieb Dry-Bag PD350 is the standard-bearer of the Ortlieb dry bag range — a versatile, cylindrical waterproof bag that works wherever you need to keep gear dry: lashed to a bike, packed into a kayak, thrown in a rucksack or tossed in the boot. Available in nine volumes from 5 to 109 litres, in Black and Signal Red.

Its design is deliberately simple. A single roll-top closure reinforced by a stiffening rod seals the bag and cinches it to exactly the size of its contents — no excess volume, no slack. The reinforced base holds the bag upright when set down and makes loading straightforward. PVC-coated PD350 polyester gives it a balance of durability, flexibility and weight that makes it usable across a wide range of activities without the bulk of a heavy-duty construction.

IP64 Waterproofing

The Dry-Bag PD350 carries a full IP64 rating — completely dustproof and protected against water splashes from all directions. The roll-top closure is the sole sealing mechanism, and it is a proven one: roll the top three to five times, clip the buckle, and the bag is sealed. Unlike welded-seam constructions, if the closure is damaged it can be repaired or replaced. For conditions requiring submersion protection (kayaking, rafting, capsize scenarios), the Dry-Bag PS490 Heavy Duty (IP67) is the appropriate choice.

Roll-Top Closure With Stiffening Rod

The stiffening rod integrated into the closure is what distinguishes the PD350 from simpler dry bags. It keeps the roll-top flat and even as it rolls, preventing the kind of irregular sealing that can create water entry points. Roll the opening a minimum of three times for splash protection; five or more rolls for sustained wet conditions. The buckle clip at the end keeps the rolls compressed and can also be used to attach the bag to a rack, frame bag or carabiner point via the integrated carry loop.

Which Volume to Choose

The 5L suits a phone, wallet and snacks for a day ride or paddle. The 7L and 10L cover a day kit or a change of clothes. The 13L handles a sleeping bag liner or a week's worth of clothing compressed. The 22L is the most versatile option — large enough for a complete day's kit or a weekend's worth of light gear. The 35L fits a sleeping bag and pad cover. The 59L covers full camping kit including shelter. The 79L and 109L are expedition-scale, designed for loading into kayak hatches or bike trailers for multi-week adventures.

Technical Specifications

• Volumes: 5 / 7 / 10 / 13 / 22 / 35 / 59 / 79 / 109 L
• Colours: Black, Signal Red
• Waterproofing: IP64
• Material: PVC-coated polyester PD350
• Base: reinforced for stability
• Closure: roll-top with stiffening rod + buckle clip
• Warranty: 5 years — Made in Germany, Heilsbronn

Frequently Asked Questions

What is the difference between the Dry-Bag PD350 and the Dry-Bag PS490 Heavy Duty?

The PD350 is the everyday versatile dry bag — lighter, more flexible, IP64 rated (complete dustproofing, splash protection from all directions). It is ideal for cycling, camping, hiking and general outdoor use. The PS490 Heavy Duty uses a heavier, more abrasion-resistant PVC-free material, is rated IP67 (submersible to 1 m for 30 min), and has thermally welded seams — it is designed for sustained water contact, kayak use and abrasive environments. The PD350 is the right choice for most uses; the PS490 is for demanding water sports or expedition conditions.

How many times should I roll the top?

A minimum of three rolls provides reliable splash protection for cycling, rain and general outdoor use. For sustained wet conditions — paddling, heavy rain or situations where the bag may be immersed — five or more rolls are recommended. The stiffening rod keeps the roll even and the buckle clip keeps it compressed. Always ensure the closure is fully flat before rolling.

Can I use the Dry-Bag PD350 for bikepacking?

Yes, the PD350 works well as an inner dry bag inside a bikepacking setup — inside a handlebar bag, frame bag or seat pack to add waterproofing to the contents. If you want a dry bag that mounts directly to the bike with its own attachment system, the Ortlieb Dry-Pack (available separately) includes daisy chains and mounting points for direct attachment to handlebars, frames and seats.

Is the material recyclable or repairable?

Yes on both counts. The PD350 is repairable — holes and damage can be re-welded by Ortlieb or an authorised repair partner. The roll-top closure buckle is replaceable. Ortlieb manufactures in Germany under strict quality and sustainability standards, and keeps spare parts available for at least ten years after a model is discontinued. L'Hirondelle Bike Shop in Meppel can advise on repair options for the Dry-Bag PD350.

What is the reinforced base for?

The reinforced base serves two purposes: it makes the bag easier to fill upright (the base stays flat rather than collapsing inward), and it allows the bag to stand independently once loaded. This is particularly useful when packing at a campsite or loading a boat — the bag stays where you put it rather than rolling. It also adds abrasion resistance at the base where bags typically experience the most wear.