# Maelstrom 40L Waterproof Hiking Backpack, Green

Source: https://www.ranked10.co.uk/fitness/best-hiking-backpacks/maelstrom-40l-hiking-backpack-jsz6
Ranked #4 in "Best Hiking Backpacks 2026: 10 Ranked, and Only Two Match Their Litres": https://www.ranked10.co.uk/fitness/best-hiking-backpacks

- Price: £31.24 (checked on Amazon UK on 2026-09-19)
- Amazon rating: 4.5 from 596 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0DRNDJSZ6?tag=ranked10-21

The Maelstrom 40L Waterproof Hiking Backpack is #4 of 10 in this guide, and it is one of only two packs here whose litre label survives being multiplied out. The listing gives the pack as 21.8 x 34 x 55.9 cm; those three numbers come to 41,435 cm³, or 41.4 litres, against the 40 in the product name. The same listing also sells a 40L pack for £23.99 that measures 59 x 25 x 16 cm — 23.6 litres. Both carry a 40L label. Only one of them is anywhere near it.

Maelstrom's description puts the same pack at 13.4 x 8.6 x 22 inches, and the specification sheet records that as 21.8D x 34W x 55.9H cm; the three figures match even though the listing cannot agree on which one is the depth. The weight is more settled: 1.96 lb in the description, 889 g in the specification, the same figure twice. The sheet lists 15 pockets and 8 compartments, calls the nylon waterproof and includes a rain cover, and the pack is sold in green. Every number on this page is the seller's, taken from the Amazon listing — none of it comes from a pack we carried.

## Specification

| Field | Value |
|---|---|
| Price | £31.24 |
| Rating | 4.5 out of 5 from 596 ratings |
| Item dimensions | 21.8D x 34W x 55.9H cm (34 x 21.8 x 55.9 cm in the description bullet) |
| Volume from those dimensions | 41.4 litres |
| Claimed capacity | 40 litres (name, size and storage volume fields) |
| Weight | 889 g, listed as 1.96 lb in the description bullet |
| Pockets and compartments | 15 pockets, 8 compartments (as listed) |
| Recommended uses (as listed) | Work |

## Questions people ask

**Is the Maelstrom 40L actually 40 litres?**

The listing's own dimensions, 21.8 x 34 x 55.9 cm, come to 41.4 litres, and the storage volume field says 40 litres. On the seller's own numbers the pack holds slightly more than its name claims, not less.

**How much does the Maelstrom 40L weigh?**

The specification lists 889 g and the description bullet says 1.96 lb, which is the same weight stated twice.

**Is the Maelstrom 40L waterproof?**

The listing gives the water resistance level as waterproof, describes the nylon fabric as waterproof, tear-resistant and scratch-resistant, and lists a rain cover as a special feature.

**How many pockets and compartments does the Maelstrom 40L have?**

The specification fields list 15 pockets and 8 compartments. The description text that is visible names a zippered main compartment, 2 front zippered pockets and 2 waist zippered pockets before it cuts off.

**What is the Maelstrom 40L rated?**

4.5 out of 5 from 596 ratings on the Amazon listing.

**What does the 22-inch compatible device size refer to?**

That field simply repeats 22 inches, which is the pack's own listed height of 55.9 cm. The listing does not name any device that fits it.