Heatgen™ Maximum Thermal Long Johns

Very good quality, just as you would expect from M&S.

Lovely and warm, soft too. I use these under my walking trousers in winter or a cold windy day. Blocks out the chill and keeps you warm.

Maximum heat gen are our favourite thermals. So warm and soft. Both my husband and I love them. Keep you warm, on the coldest days.

Good fit and happy with the buy. Warm and comfortable.

Fits husband nicely who is 5”6. He says they are warm and comfortable for working outdoors in winter.

This range is so good for keeping you warm in cold weather - I wear under jeans as an extra layer and took them skiing they were a perfect base layer

Very warm only complaint hubby found them a little short in the leg.

Perfect for this weather. Bought for Family member who works outside.

Being buying those for my dad for years. He would not have any other brand. He loves them

Great purchase - I bought this for my husband quality assured with Marks and spencer

V Good Quality have purchased item before - slightly short in leg for me. I’m 1880mm high but going up a size would probably mean I’d have to eat more grub and be a fatty to absorb the excess material forming the overstretched elastic waist bit.

I purchased these thermal under garments for additional warmth during this winter period. I am approaching my 80th birthday and feel the need for extra clothing during the cold days. They are comfortable to wear and do provide extra insulation against the cold temperatures. Recommended.

Bought for travelling in a northern Norway winter. Have worn them under jeans and have kept me warm for the couple of hours each day when Im out walking.

Warm and cosy. Great to wear in the winter periods