The armrests of this walker are able to height adjust independently, allowing the walker to be custom fit to a number of user requirements. Height adjustable from 100 to 130cm in 3cm intervals. External width at arms 65 to 90cm. Internal width at arms 34 to 45cm. Four swivelling castors 10cm in diameter, two of which are fully braked. Footprint 81 x 85cm. Weight 16kg.