We appreciate that there are some people who find it hard to stay warm in the cold winter months and with the cost of living putting pressure on some households, we wanted to take a look at some thermal underwear this week. So Sophia Smith has a 7 Day Challenge for us and for Day 2 she is reviewing these Primark thermo layer heavy weight base layer leggings. Come back tomorrow for Day 3 of her challenge and at the end of the week she'll conclude with picking the best from all 7 items reviewed. Filmed in 4K.

"They've got a cuffed bottom so hopefully that helps to keep the heat in." Sophia Smith