The thumb web has a unique anatomy, the integrity of which is vital to both form and function of the hand. Thumb web space adduction contractures are a common consequence of hand burns and are a progressive disabling deformity and prevention or early intervention is advisable. This case describes the use of a customised removable web splint in children with scarring and gradual contracture of the first web space causing pain with movement and significant restriction in the hand function to maintain the thumb web expansion. This inexpensive and effective appliance can be safely applied to an injured hand, maintain web space following surgical release and allows movement at the first carpometacarpal joint and hence obtains a good functional outcome.