Alf Alderson tests the warm and eco-friendly Blackcomb thermal trousers - made from 38% recycled polyester.

PRICE: £60

WEBSITE: Odlo

WHAT THEY SAY: "Seamless knitting technology; integrated functional zones for optimal moisture management and better ventilation; total breathability; 'effect by Odlo' – odour-inhibiting fibres; perfect thermal insulation; partially made from recycled materials."

WHAT ALF SAYS: Odlo incorporate their ‘Greentec’ technology into these long johns, which uses 38 per cent recycled polyester in their construction, so when you wear them you’re saving the planet as well as keeping your legs snug.

The Blackcomb features a combination of knitted ‘function zones’ with flat seams that provide additional thermal insulation at your knees along with better ventilation at the knees and bottom. In addition there’s a ‘ski-specific’ waistband which is cut higher at the back for better insulation and improved comfort.

There’s actually a distinct lack of seams, which obviously helps in term of comfort, but the soft, smooth feel of the fabric against your skin is great too, and it has heaps of stretch. The pants are not especially thick or heavy but they’re certainly warm. And what’s more, they Blackcomb’s are actually £5 cheaper this year than they were last season.

As for the camouflage design on the lower legs – well, I wouldn’t let that put you off if you don’t like it. After all, who will see it other than you and your mum when she washes them?

FOR: Warm and eco-friendly

AGAINST: Camo design may not appeal to everyone; but who will see it?

Alf Alderson is an award-winning freelance ski journalist who will be working on gear reviews throughout the 2016/17 season for the Ski Club of Great Britain.