Product Colors and Sizes

  • Black Friday product
  • New Deal product
  • Cyber Monday product
  • Clearance product
  • Deal product
  • Best Seller product
  • Ecodesign product
  • New product
  • Staff Pick product
  • In The News product
  • Innovation product
  • product

Forclaz Trek 100 Fleece Hiking Tights

Sale price: $14.99 Regular price:

Warm, this fleece undergarment is also very soft. It’s perfect for spending a pleasant night backpacking. Enjoy its light weight too.

Color: Select a color
Size: Select a size
Size Guide

This product runs small

Sale price: $14.99 Regular price:

Free shipping over $35

Free returns

Free pickup

San Francisco, 735 Market St. Options

Select an available color and size to see options.

Model: 8227508

Product Videos

Product Features

A photo of the Forclaz Trek 100 Fleece Hiking Tights in use

Forclaz Trek 100 Fleece Hiking Tights | Our team of mountain backpacking enthusiasts developed these polyester tights for nights bivouacking or under shelter.

Warm, this fleece undergarment is also very soft. It’s perfect for spending a pleasant night backpacking. Enjoy its light weight too.


Warm tights. Recycled microfleece, brushed inside and out.


Only 7.3 oz in size S. Microfleece with 4.9 oz/m2 density.

Moisture wicking

Polyester knit: lets through water vapor generated by the body (RET=6.3)

Easy to maintain

Creaseproof. Machine washable. Quick-drying

Product Customer Reviews

Skip to reviews
2311 Reviews
Write a Review 

Forclaz  Trek 100 Fleece Hiking Tights,black
Filtered by reviews Loading reviews…

Awesome - cozy & comfortable perfect combo

Overall is good. It is soft and light warm fleece

Overall is good. It is soft and light warm fleece The size for this brand is relatively a bit skinner than other brand for the same size. I picked XS size as usual, and realized that its waist elastic band is a bit tight, if it can loose about 1-2cm would be better Since it is so comfortable, I will get size S

So soft and lightweight

I'm super happy to finally find a fleece kit that is light weight and fits perfectly. Will be a charm for fall/winter. Super comfy!

icon-circle-checkmark verified purchase
Waist band needs work

The fit of the pants is great - true to size although those that prefer a high waist pant likely will not like these. The waist hits 2-3 inches below the belly button so not at the most flattering point on most women. I like everything about these pants aside from the waist band/draw string particularly good quality of pant for the money. The elastic waist band is tight enough to not need a draw string at all so why did they put this weirdly thick drawstring in? I thought okay maybe if people want to size up 2-3 sizes for a very oversized fit they might need it. It isn't needed and causes lumping and discomfort in the wait band. I tried to pull it out but it appears to be sewn in in the back. Given the cost of the pants I decided to live with it but I've just seen in a side-by-side comparison in a targeted ad that the men's pant have a "normal" elastic waistband with no draw string. What gives? Why do men get the practical/comfortable waist band. Boo!

very good material

value vs money high recommended


Thank you

icon-circle-checkmark verified purchase
Far better than expected. ..ticked all the boxs


icon-circle-checkmark verified purchase

I bought these to go under waterproof trousers. Read the other reviews and decided to size up. Glad it did as they come up really small. I’m a UK 8 5’2” 50kg and had to order a medium! There’s hardly any stretch to them. The rise is super short so no tucking any tops in. No pockets. There were so many unnecessary large scratchy labels inside the waistband which I cut out. Positives … the fleece material is warm and the leg length ok so I’m keeping them.

icon-circle-checkmark verified purchase

I am a true size (UK) 12, 5ft 3 tall and bought in a medium and they are perfect in every way. Quite form fitting but don't dig in anywhere and aren't tight on my legs despite me not having thin legs. I wear them over compression leggings for hiking in winter. Have had some freezing cold days and the heat held inside these trousers is incredible. Even when worn all day climbing up and down a mountain, scrambling, sliding, bending, they stay put. My only criticism is they have no pockets. But I love them far too much to take a star off for that.

icon-circle-checkmark verified purchase

I use these as a part of my sleep system when hiking. I take a tiny naturehike summer sleeping back, combined with a +8 degree bag liner, puffy, fleece trousers and a fleece jumper, that system let's me sleep warm down to about -2 degrees C.

icon-circle-checkmark verified purchase

Hi Samantha,

We are glad to hear that the Trekking Fleece Tights are suiting your adventures.

Enjoy the rest of your day!

Soft and confortable

Super soft and ultra confortable to wear, it will be ideal to keep warm in the tent when I’ll go camping

Very Short Crotch Length

I purchased a size small in these pants to use while climbing Mt Kenya, both as a base layer around camp and as pyjamas in my sleeping bag. They are well suited to both these tasks because they are form fitting and fleece is always going to be warm. HOWEVER, they are a little short on me (admittedly i have a longer leg inseam - 33inches) and worst of all, they have a really short crotch length! They are flattering as long as i'm walking around but as soon as i sit down or bend over the back rides down and it's a full moon! I don't think i have a particularly big bum and i have seen a few people comment the same so i think this is just a poorly designed product. I am hoping they have a size M in stock soon so i can try those on instead and see if they fit better. I actually tried on the men's small hoping they might fit better and although they don't ride down at the back, they feel much shorter in length and the fit was so loose that they felt draughty.


Warm, comfortable, light

icon-circle-checkmark verified purchase

Fleece outside which I didn’t expect. Very comfortable & neat fit.

icon-circle-checkmark verified purchase
Loose Warm Fleece

Nice for lounging around. Have to send it to alteration as it was too long for me (I'm 5 ft).

icon-circle-checkmark verified purchase
Skip to reviews

Size Guide

Size Guide Visual

Additional Product Information


Main fabric: 100.0% Polyester

Fleece component: insulation thanks to air

The fleece component is designed to trap air in the space formed by its texture; this air acts as a natural insulator, keeping the body warm. It is the brushing of the knit fabric that traps the air.

Storage instructions

Store folded in a clean and dry place



Superior quality. Unbeatable prices.

For 40 years, Decathlon has delivered the best value in the retail sports industry by offering high-quality, sustainable and cost-effective products.

Decathlon makes the difference
  1. product-research

    Research and development

    delivers high-quality cost-effective products

  2. State-of-the-art production processes

    minimize manufacturing costs

  3. Optimized supply chain

    reduces retail prices

  4. laptop-checkout

    Minimal retail footprint

    lowers overhead and indirect costs


Size Guide Visual