We only list UK sizes. If you're not sure what your UK size is, please click on ‘Size advisor’ or review our size guides.
When the temperature drops, our ultra-lightweight thermal long johns add a cosy extra layer. Regular fit, with Flexifit™ for enhanced support and freedom of movement. With supersoft seams, heatsealed care labels and moisture-wicking fabric for maximum comfort. Heatgen™ technology gives light warmth without additional bulk. Fly front fastening. All of the cotton for our clothing is sustainably sourced and always will be.
You may return unused products within 35 days of purchase.
How to return:
1. FREE instant returns in store. The select M&S click and collect stores can be found here
2. Returns Hub. Drop your package at your nearest post office using a pre-paid label. The cost of postage is provided at a discounted rate and will be deducted from your refund. Select this option and print your label here.
3. Self-postage return to the UK. Return your parcel at your own cost through your preferred carrier. Print your returns label and note here.
Express delivery: 3-5 working days. FREE over €60, otherwise €7.95.
Store collection: 6-8 working day. FREE to collect in select stores.