Soft and Compressible Filter Bottle - 1 Litre - MT500


Our team of trekking enthusiasts created this filter water bottle to carry and filter water while trekking. Soft bottle, quick-fitting cap. 1 litre.

A flask that makes water drinkable by filtering clear water to remove bacteria and protozoa. Quick and easy opening with 1 hand, durable and compressible silicon product. 180 g.

Color: Lunar grey


Home delivery or Click & Collect
Store stock checker

Product benefits


Filters 99.9999% of bacteria (E. coli, etc.) and 99.9% of protozoons.


Filters up to 1000 litres of waters, blocks itself once the limit is reached.

Easy opening / closing

Opens quickly with 1 hand & closes easily. A cap protects the teat.


In silicone: light, very strong and compressible. No after-taste.

Ease of use

Wide opening for easy filling, carry handle. Removable filter.




Replacement filter Trek 500, reference: 8553332

Technical information

First use

Flask with built-in and removable filter. You can use the product without filter just like a traditional flask.Before first use, rinse the bottle, top and filter with drinking water (3 x 1 minute).
When using for the first time or whenever the filter is dry, fill the bottle with water, screw on the cap and leave to stand for a few minutes to prime the filter. Then draw in 5 quick sips to enable the water to flow.

Directions for use

Rinse your bottle and the drinking water filter to remove dust and impurities.
Fill the bottle with fresh water (avoid stale and stagnant water) from the best source available without polluting the teat or cap. The more clear and clean the water is before filtering (lack of impurities) the longer your filter will last.
Be careful not to drink water that flows the length of your bottle when drinking. Make sure that the bottle is closed tightly.

Advice for use (continued)

Drink by inserting the teat into your mouth and pressing lightly on the body of the bottle to adjust the pressure and amount of water to drink.
Your bottle no longer filters water when it reaches the end of its lifespan.
If you can no longer suck the water, it is time to replace the part that contains the filter.
Thoroughly dry your filter after use.

Filtration system

We chose a micro-filtration technology with a membrane (hollow fibre) that eliminates up to 99.9999% of bacteria (eg : Escherichia coli, Vibrio cholerae, etc.) as well as 99.9% of protozoan parasite cysts (eg: Cryptosporidium parvum, Giardia lamblia), organisms which cause illnesses passed on through water. This greatly reduces the risk of contracting diseases such as diarrhoea, dysentery or giardiasis.

Care tips

After each use, unscrew the cap, rinse the bottle, top and filter with drinking water and allow to dry thoroughly. Before washing the bottle, remove the filter.Do not wash the filter in the dishwasher. Do not try to clean the fibres in the plastic housing. If in doubt, change the filter.
Should you blow into the bite valve and the air passes through the filter, it is defective and must be replaced.


Drinking untreated water and improper use can expose you to harmful micro-organisms and increase the risk of gastrointestinal disorders. To reduce the risks involved, follow the safety guidelines and instructions for use, and find out about the suitability of the water for human consumption in remote areas.
Never use to filter sea water or chemically treated water.Viruses are not filtered by this hollow fibre filter.
Do not drop.

Weight and dimensions

Volume: 1 litre
Size: Ø 8,5 cm x h 27 cm
Total weight: 180 grams
Bottle weight: 140 g. Filter weight: 40 g.Filter dimensions: Ø 6,5 cm x h 8 cm
Available in 0.6 L and 1 L
Available with or without filter.
The filter is also sold separately.

Materials and regulations

Our products and materials meet the food contact standards in force. They do not contain Bisphenol A (BPA) in accordance with the French regulations in force.


Water bottle guaranteed for 10 years.
Change filter according to your usage and water quality.


0.18 kg

Product concept & technology

Product Composition

Bottle/Body 86% Silicon, 11% Polyester, 3% Polypropylene Straw 72.97% Acrylonitrile Butadiene Styrene, 18.92% Polyurethane, 8.11% Polystyrene Lid 46.43% Polypropylene, 39.29% Polyester, 7.14% Acrylonitrile Butadiene Styrene, 3.57% Rubber - Thermoplastic Rubber, 3.57% Silicone


Wash and dry before storing away. Store in a clean, dry place.

User Directions

Does noteliminate viruses. Do not use with contaminated water.


Microbiological performance and longevity are validated in standardised laboratory tests.

Approved By

This soft filter water bottle has been tested and validated in the field in real-life conditions. It was used for 5 weeks by several people who went trekking in the Canary Islands for 2 weeks, followed by 3 weeks on the GR10 route in the Pyrenees.
Other testers hiked across Scotland for 4 weeks with this product to test.

Maintenance advice

Wash before first use.


Soft and Compressible Filter Bottle - 1 Litre - MT500
Soft and Compressible Filter Bottle - 1 Litre - MT500


Customer reviews