Our site works best with JavaScript enabled.
{/layout:set} {/layout:set}

Tonka Zip Off [Mens] convertible walking trousers

Tonka Zip off trousers


  • Kelp - Tonka Zip off trousers
  • Tarmac - Tonka Zip off trousers

Mens tough but lightweight convertible walking trousers, fast wicking and quick drying designed for travel and adventure


1. Colour / Size
Fitting guide

Please choose an option above

  • Full Description
  • Features At A Glance
  • Size Guide
  • Customer Reviews
  • Kudos

Tonkas are a regular cut, tough but lightweight convertible trousers for walking, hiking, travel and adventure.

Made from technical 136gsm and SPF50+ fabric they are lightweight, fast wicking and quick drying. Ideal for backpacking and Alpine trekking. They are so lightweight and pack so small they are also ideal to take cycle touring for times off the bike around the campsite in morning and evenings.

Converting these trousers to shorts is a cinch, just zip off above the knee and feel the breeze. Ronnie has even subtly colour coded the zips so you know which leg to put back on which side. Nice eh!

You can wear Tonka with confidence; Tricot lined waist with belt loops, YKK zipped fly with a button waist closure and double stitched critical seams for durability. Fast wicking and quick drying with UPF 50+ sun protection make them a cool choice for hot conditions.

There are plenty of pockets to stash your stuff or sink your hands into while posing in your favourite catalogue shot pose. Open hand pockets on the front with partial mesh lining, open rear pockets and a YKK ripped thigh cargo pocket. There is also a zipped security pocket in one of the front pockets, but don’t tell everyone. 

In ‘long’ mode Tonka has a 32” inseam, however we have left a deep plain hem so you can easily make length alterations. In ‘short’ mode Tonka has a 10” inseam.

More images

Key features
  • Wicking and quick drying fabric
  • Mesh lined hand pockets
  • YKK zipped thigh cargo pocket
  • Double stitched critical seams for durability
  • Deep plain hem (for easy length alteration if required)
  • 3 Year Alpine Bond
Vital stats

Weight: S: 294 g, M: 309 g, L: 315 g, XL: 319 g
100% nylon
136 gsm
UPF 50+

Origin: China

Size chart Trousers Mens


Measure around your waist at the narrowest part.

S 30 76
M 32 81
L 34 86
XL 36 91.5
XXL 38 96.5

Leg Length Size

Measure from the top of your inside leg at the crotch to the floor. Where not stated size is regular.

Short 30 76
Regular 32 81
Long 34 86
What You Say: Customer Reviews and Comments

4 Reviews


Used this product?

Write a review
Angus Beardsmore
Great pair of lightweight versatile quick drying trousers.

I love these trousers apart from the lack of zips to allow them to be taken off without removing your boots/shoes.
I've had mine altered & now they're perfect.

Nice bit of kit

Bought these for TrekFest - an upcoming 50k walk in the Peaks in Sept 18, so wanted something lightweight and flexible for heat and cold/rain. Not sure if the design's updated since the other review, but the belt loops were fine for me, and the zip off legs good too - one zip is light grey, and the other dark, so you can see which is which, and also one is clockwise, and the other anti-clockwise around the leg, if you see what I mean.
Coped with a recent 100k training cycle, and another 20k walk, getting soaked, and drying out pretty quickly. Front pockets are mesh lined. Thigh pocket will take an OS map widthways, but it will stick out about 10 cm lengthways, but fine for easy access. Quite long in the leg, but I just turned them up.
Does the job for me, at a price that's right.

Large for size

I'm a long-legged 36" waist, so got the XL and found them too large around the waist really, definitely needed a belt and then suffered the problem of first reviewer in that there are too few belt loops, so the belt rides above the material and rubs (especially with a backpack belt sat on top).

Nice thin quick drying material & no problems zipping bottoms on/off. Legs possibly a bit tight for me during sweaty weather, meaning they stick a bit

Fine, but not brilliant

I've used these trousers for a little while and they are fine – if from another manufacturer. But I'm used to Alpkit stuff being a little bit special, and these aren't. The cut is ok, but the main problem I find is that the belt loops at the back are too spaced out, meaning a belt sits above the waistband. Also, the zips aren't colour-coded as far as I can see, which means the same trial and error you get from any other brand of zip offs. Fine, but not great.

What They Say: Kudos - Product Reviews from independent magazines and websites

Wanderlust Best Walking Trousers

A good price for high sun protection and multiple features – at a good weight – mean this easily takes our ‘Value Buy’ accolade

Phoebe Smith

Wanderlust Magazine April 2017 - Phoebe Smith

Here are some similar products

Bloc [Mens]

Super stretchy organic cotton climbing trousers


Bloc [Womens]

Super stretchy organic cotton climbing trousers


Kraft [Mens]

Durable organic cotton canvas mountain pants


Arnison [Mens]

Incredibly tough midweight outdoor and hiking trousers


Arnison [Womens]

Incredibly tough midweight outdoor and hiking trousers


Nautilus [Mens]

Durable waterproof overtrousers for all-season mountain use


Be the first to hear about our newest products and promotions

Join AlpCol's Espresso newsletter for that hit of Go Nice Places, Do Good Things Greatness


By adding your email you consent to our terms and conditions