Straame Interior Dehumidifier, 500 ml, Pack of 40

Straame Interior is a pack of 40 disposable, 500 ml moisture absorbers using hydrophilic crystals rather than a powered fan or motor. It is intended for smaller indoor or enclosed spaces, so it suits passive moisture management but is not presented as a powered room dehumidifier.

At a glance

Crystals draw moisture from the air and collect it as liquid in the lower tray, according to the product description.
No plug, batteries, fan or motor are required. Setup involves removing the lid and inner protective layer, then placing the unit upright on a flat, stable surface.
The listing estimates around 4–6 weeks of use per unit under normal indoor humidity conditions, with replacement needed when crystals are spent or the lower chamber fills.
Suggested locations include wardrobes, cupboards, bathrooms, bedrooms, offices, garages, caravans and boats.

Price

£25.49Save 15%

Reference price: ~~£29.99~~

Price checked: 14 Nov 2026

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Often bought together

Straame Interior Dehumidifier 500ml, Moisture Absorber Crystals, Pack of 40 | No-electric design absorbs moisture for 4-6 wee

Pros and cons

Pros

Passive operation avoids cables, power use and moving parts.
The pack of 40 offers multiple units for placement in several small or enclosed spaces.
A lower liquid-collection tray provides a visible indication of absorbed moisture.

Cons

These disposable units need replacing when the crystals are spent or the collection chamber is full, creating ongoing replacement needs.
The description positions them for smaller or enclosed spaces, not as a powered appliance for treating a whole room.

Technical specifications

9 specifications

Identity
Brand	Straame
Model	Interior, 40

Capacity and operation
Capacity	500 Millilitres
Operating mode	manual
Special feature	Hydrophilic Crystals
Recommended uses	Commercial, Residential

Dimensions and installation
Dimensions listed	3.5D x 11.5W x 20H centimetres

Materials and appearance
Material listed	Plastic
Colour	White

What to know before buying

The stated 4–6 week lifespan is an estimate that depends on humidity and room conditions. Replace a unit when the crystals stop absorbing or the lower chamber fills.

Who is it for?

A good fit for

People wanting power-free moisture absorbers for wardrobes, cupboards or other small enclosed areas.
Buyers seeking multiple disposable units for use across indoor spaces, caravans or boats.

Less suited to

People looking for a powered dehumidifier to treat a larger room or continuously control humidity.
Buyers who prefer a refillable or reusable moisture absorber rather than replacing disposable units.

Straame Interior Dehumidifier, 500 ml, Pack of 40 · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 3,111 ratings

5 stars64%64%
4 stars19%19%
3 stars8%8%
2 stars2%2%
1 star7%7%

Customer feedback describes the units as easy to use and versatile, with positive reports involving cupboards and motorhomes. Experiences with moisture absorption and effectiveness are mixed, as are comments on durability and value. For buyers using the product in small enclosed spaces as intended, the passive setup is straightforward, but feedback does not establish that every unit will collect noticeable moisture or last consistently.

Positive themes

Customers describe the product as simple to use and versatile.

Mixed feedback

Feedback on effectiveness and moisture absorption is mixed, including reports of both useful absorption and little or no collection.
Durability reports vary, including both longer-lasting units and reports of broken units.
Opinions on value for money are divided.

Frequently asked questions

Does the Straame Interior dehumidifier need electricity?

No. The listing describes passive crystal absorption with no plug, batteries, fan or motor.

How long does each unit last?

The stated estimate is around 4–6 weeks under normal indoor humidity conditions, but actual duration depends on humidity and room conditions. Replace it when the crystals are spent or the lower chamber fills.

Where can these moisture absorbers be used?

Suggested locations include bathrooms, bedrooms, offices, wardrobes, cupboards, garages, caravans and boats. The product is described for smaller indoor and enclosed spaces.

How do I set one up?

Remove the lid, peel away the inner protective layer, replace the lid and stand the unit upright on a flat, stable surface.