M&S has released a pair of thermal high-waisted jeans to keep you warm whilst you're out and about in the winter. The skinny jeans are available in three shades - dark blue, light blue and black.

The jeans are ideal to wear underneath knee-high boots due to the narrow leg. They are already popular with fans as some sizes have already sold out.

As regular M&S shoppers know, the retailer always releases petite, tall and regular lengths for all of its trousers and jeans. Fans are clearly loving the thermal jeans, as only a few sizes are available in all three options.

The product description reads: "Update your denim collection for colder weather with these stylish thermal jeans. They're cut in a skinny fit, with a cool ankle-grazer length and a button and zip fastening at the flattering high waist.

"Added stretch ensures a flexible feel, while the five-pocket design offers a timeless finish. M&S Collection: easy-to-wear wardrobe staples that combine classic and contemporary styles."

The M&S skinny jeans
The M&S skinny jeans

A shopper left an online review reading: "Love these jeans warm and comfortable and fit really well." A second said: "Lovely pair of jeans that fit true to size. They do feel warmer than normal jeans."

And a third wrote: "Comfortable and warmer than other jeans which is great for colder weather." However, not all customers are happy with their purchase.

One shopper said: "I really wanted these but was left speechless by what I received. One leg was 6inches longer than the other!!!"

And another wrote: "I have 2 pairs of these from last year which I love. This year's are thinner and shorter. Shame. Why change them M&S?"

Thermal jeans aren't that common, and not many retailers are selling them - from what we can find. However, we have found a similar pair on Amazon that are a bit cheaper.

These fleece-lined jeggings are also available in light blue, dark blue and black. But the size range is limited, with only sizes 8, 10, 12 and 14 options.

The skinny jeans are lined with fleece to keep your legs warm. They are also stretchy. You can buy them here for £27.99.