Nike Flex Train Workout Shoes (Men's & Women's, Multiple Colours)

A proper all-rounder for the gym — the Flex Train handles lifting, HIIT and short runs without feeling clunky. The mesh upper keeps things breathable, the foam midsole gives decent cushioning, and the flexible outsole actually moves with you during lunges and burpees. Synthetic construction throughout, so no leather worries. Several men's and women's colourways are 30% off at £52.49 instead of £74.99 — a tidy saving on a versatile training shoe.