Which size should I choose?

These trousers run slightly large: if you're between sizes, choose the smaller one. Sizes range from S to 4XL, and the size guide on the product page gives measurements for each.

Which leg length should I choose?

The side zips run to the bottom of the legs, making hemming difficult, so it's best to choose the right length when ordering. For men under 172 cm, the short version has legs 6 cm shorter; select it using the version selector on the product page.

Do the leg zips rub when walking?

Side zips let you remove the legs without taking off your shoes, while a flap covers the zips inside and out. It may take a few outings to get used to fastening them at the thigh.

How many pockets do these trousers have?

Eight pockets, including two hidden ones for your passport and documents: two hand pockets, two cargo pockets and two back pockets, plus an almost invisible outer pocket and a concealed inner pocket.

How does the mosquito-repellent treatment work?

The INSECT-STOPPER treatment, applied to the fabric, repels mosquitoes without odour, providing durable protection while the garment is worn. It is a biocidal product containing the active substance permethrin; it may cause skin sensitisation. It protects covered areas: use a skin repellent on exposed skin.

Does it protect against the sun?

The fabric has a UPF 50+ rating and filters UV rays on covered areas. Once the legs are detached, your calves are exposed: remember to apply sunscreen.

What fabric are these trousers made from?

The main fabric is 100% polyamide and the inner mesh is 100% polyester, with no elastane: the fabric does not stretch. The waistband is partly elasticated for greater comfort at the waist. The traceability information notes that washing releases plastic microfibres.

How should I care for these trousers and preserve their treatment?

Machine wash at 30 °C on a normal cycle. Do not bleach or dry-clean, and avoid ironing at too high a temperature: this helps preserve the mosquito-repellent treatment. The fabric dries quickly.

What are the delivery times for this product?

All orders placed by midnight are prepared the next day. In France, orders placed before 1 pm (excluding weekends) with Chronopost 24h are dispatched the same day. Delivery then depends on the carrier and takes 1 to 4 days in France. Delivery times for Europe and the rest of the world vary by destination.

Can I return the item if the size doesn't fit?

Yes, absolutely. You have 30 days to return it and get a refund or an exchange. Return shipping is free. The item must be new, unworn, unwashed, and have its original tag.

Men's convertible mosquito-repellent trousers - Katmandou

89,90 €

312 reviews

Ultra-resistant

Mosquito repellent

quick-drying

360 g (size M)

Green

Delivered from Thu 12 Nov.

Free returns within 30 days

Available in several versions

Men Women

Trousers Short length Zip-off Zip-off short length

Free repairs for life

By La Réparerie, our repair service.

Complete your outfit

ACAPULCO

Men's mosquito-repellent long-sleeve shirt

74,90 €

VENTURI

Quick-drying CIMADRY multi-sport T-shirt - Men

34,90 €

KATHMANDU

89,90 €

312 reviews

Delivered from Thu 12 Nov.

Free returns within 30 days

Who did we design it for?

For travellers and trekkers heading to hot climates, from tropical regions to summer trails, who want trousers that protect against mosquitoes and the sun.

How do they convert into shorts?

Side zips run the full length of each leg: detach the lower sections in seconds without taking off your shoes, then stow them in your pack.

What protection does it offer?

The INSECT-STOPPER mosquito-repellent treatment, integrated into the fabric for hot, humid countries, repels mosquitoes; the fabric also provides UPF 50+ sun protection.

What makes it different?

Eight pockets, including two hidden ones, keep your passport and documents out of reach without having to take off your trousers.

Its performance

Lightweight

360g (M)

Waterproofing

Water-repellent DWR

Wind protection

Moderate wind, 40 to 60 km/h

Ideal for

Travel

Hiking

From morning trail to town: one pair of trousers

Sticky heat, persistent mosquitoes, strong sun: on a trek or a multi-day journey, conditions can change quickly between the morning trail and an afternoon in town. One pair of trousers needs to handle both.

These trousers are made for long days in hot climates. Their treatment repels mosquitoes, while the fabric protects from the sun and dries quickly after exertion. The legs detach at the sides without taking off your shoes, and the pockets, including two hidden ones, keep your passport and valuables out of reach.

Because travelling lightweight means carrying just one piece that does the work of two.

Key features

Lateral zip conversion trousers - shorts

- Removable legs without removing your shoes,
- Switch from trousers to shorts in seconds.

2 secret pockets + 6 pockets

1 near-invisible exterior pocket + 1 completely concealed interior pocket
2 cargo pockets, 2 hand-warmer pockets, 2 rear pockets

Half-elasticated belt

- Flexible fit with integrated belt loops,
- Comfortable hold with no pressure points.

Microfibre cloth for sunglasses

- A microfibre cloth has been included to clean your sunglasses.

Mosquito protection

- Integrated mosquito-repellent treatment in the fabric for warm and humid countries.

INSECT-STOPPER Technology

Anti-mosquito protection for outdoor activities and travel.

Anti-mosquito barrier : treatment* permethrin-based to help reduce bites during outdoor activities.
High efficacy : effective against multiple species, including Aedes (tiger mosquito), Culex and Anopheles.
Easy and comfortable to wear : odourless treatment, OEKO-TEX® STANDARD 100 certified, suitable for extended use.

The INSECT-STOPPER treatment is applied to the fabric to provide durable protection during wear. May cause skin sensitisation.

*The anti-mosquito treatment is a biocidal product with permethrin as its active substance.

Details

Specifications

Weight

360g (M)

Brand

Cimalp

Fabrics

Main fabric: 100% Polyamide; inner mesh: 100% Polyester

Sun protection

UPF 50+

Wind resistance

Moderate wind, 40 to 60 km/h

Waterproofing

DWR water-repellent treatment

Size type

Men's Bottoms

Traceability

Product sheet on environmental qualities and characteristics
Manufacturing: China
Weaving/Knitting: China
Dyeing/Printing: China
Releases plastic microfibres into the environment during washing

Complementary products

+6

X2-LONG

Double-layer blister-prevention trekking socks

(944)

16,90 €

FOLD

Foldable mosquito-repellent cap

(262)

19,90 €

+5

Light Wool

Lightweight merino wool socks

(928)

16,90 €

GO2 PAREI

Sunglasses with polarised lenses

(2)

49,90 €

Reviews

4.9

Based on 312 reviews

5

91%

4

6%

3

0%

2

0%

1

0%

Customers recommend the usual size

Comfort

Ergonomics

In summary This content is written by AI

Customers are won over by this pair of trousers’ comfort, light weight and practicality. They appreciate its fitted cut, spacious pockets and thoughtful details, such as the glasses wipe and side zips. Several also praise the quality of the finishing and the excellent value for money; one customer found it cool and light in the mountains, while another has already ordered a second pair. As the leg length and waist can vary depending on body shape, check the size guide carefully before choosing.

Ernest.C

Verified customer

15/04/2021

Been after a pair of trekking trousers for use during the Summer for a while and saw these were on offer. I'm 5ft 11 inches (1.80m) and 32 inches waist, however sizing can sometimes still be an issue for me, yet these size M are absolutely perfect in waist measurement and leg length. Made from good quality material and match specification description. No hesitation to offer recommendation and add another great product from CimAlp to those I already possess.

Kevin.P

Verified customer

Ordered size L Ordered color Anthracite

25/03/2024

Not worn yet but they appear well made. Bought with my trip to Everist base camp later in the year in mind.

jean L.

Verified customer

Height 190cm Usually wears XL Ordered size XL Ordered color Beige Usage Randonnée, Voyage

05/10/2026

fits well, comfortable

Paul ..

Verified customer

Ordered size XL Ordered color Anthracite

18/09/2023

To be honest I haven’t received the product yet. I did receive an email from UPS to say it would be delivered to the drop off point on Friday last. I went to collect it but it was not there. I am still waiting for an update from ups

Olivier G.

Verified customer

Usually wears L Ordered size L Ordered color Vert Usage Voyage

Translated review

25/10/2026

Very practical trousers for travel with a hidden pocket to keep your passport safe. One of the two leg pockets is also secured with a zip in addition to Velcro. Plenty of advantages to choosing these trousers for travel.