Quick Answer

For most day trips, a 15L or 25L dry bag is enough for a change of clothes, snacks, and a small camera. For overnight trips or bulky gear, choose a 40L. Use a 7L for just a phone, keys, and a wallet.

Why Size Matters on the Water

A dry bag that is too large tempts you to overpack, making it heavy and hard to fit inside a kayak hatch. A bag that is too small leaves you scrambling to protect essentials. The right size balances capacity with packability.

Consider what you carry on a typical trip. A 7L bag fits a phone, keys, and a light layer. A 15L bag handles a change of clothes and a small camera. A 25L bag is good for a day trip with extra layers and food. A 40L bag suits overnight trips or bulky gear like a sleeping bag.

Weight and Balance

Heavier dry bags affect how your kayak handles. Keep heavy items low and centered. A 40L bag filled with camping gear can be unwieldy to lift in and out of a hatch. Choose a size that allows you to pack only what you need.

Remember that a fully packed dry bag is harder to seal. Leave some room to roll the top closed properly. Overpacking can stress the seal and reduce waterproofness.

Decision Rules for Dry Bag Size

  • Day trip with minimal gear: Choose a 7L or 15L bag for a phone, keys, a light layer, and a small camera. If you often add a lunch or extra layers, step up to 15L.
  • Day trip with full gear: Choose a 25L bag for a change of clothes, towel, food, and a camera. Pack heavy items at the bottom to keep the bag balanced in your kayak.
  • Overnight or multi-day trip: Choose a 40L bag for a sleeping bag, extra clothes, and camping essentials. Leave some space to roll the top closed properly and maintain a waterproof seal.
  • Bulky but light gear: If you carry a sleeping bag or a down jacket, a 40L bag is better than a 25L even if the weight is similar. Volume matters more than weight for bulky items.

Dry Bag Options

  • Atacama Dry Bag 40L: The Atacama Dry Bag 40L is a fully welded, roll-top dry bag built from durable PET ripstop. This size suits overnight kayaking trips where you need to keep a sleeping bag and extra clothes dry.

    Atacama Dry Bag 40L

    Atacama Dry Bag 40L

  • Atacama Dry Bag 25L: The Atacama Dry Bag 25L is a fully welded, roll-top dry bag built from durable PET ripstop. A 25L bag is a versatile choice for day trips, fitting extra layers, food, and a camera without being too bulky.

    Atacama Dry Bag 25L

    Atacama Dry Bag 25L

  • Atacama Dry Bag 15L: The Atacama Dry Bag 15L is a fully welded, roll-top dry bag built from durable PET ripstop. This size is ideal for a change of clothes and a small camera, keeping essentials within reach.

  • Atacama Dry Bag 7L: The Atacama Dry Bag 7L is a fully welded, roll-top dry bag built from durable PET ripstop. Use a 7L bag for just a phone, keys, and a wallet, or as a liner inside a larger pack.

Which Size Fits You?

Best for

  • Kayakers who want a compact bag for just the essentials
  • Day-trippers who need a change of clothes and a camera
  • Overnight paddlers who carry camping gear

Not for

  • Ultralight paddlers who prefer to pack everything into a single small bag
  • Those who need to carry a large DSLR with multiple lenses—consider a dedicated camera dry bag