Childrens Boys Girls Clarks Casual Trainers Ath Flux T - G Fit. Brand: Clarks. RRP: £30. Fastening: Velcro. Width Fitting: G Fit. Synthetic. Powered by innovative technologies like Contoured Comfort and Cushion Plus, our shoes provide support where it’s needed most. Offering supreme softness and lasting comfort, Cushion Soft’s high-rebound foam inlay is cleverly concealed inside the shoe to absorb the impact of every step. Lightweight sole provides cushioning and flexibility. Move in Comfort.