Note: Please contact us if your child requires specific accommodations based on length or weight to discuss customized options for this product. Smirthwaite Adjustable Height Wheely Stool The adjustable height wheely stool is our most popular wheely stool. It has been designed specifically for working at lower levels with your child, student or client. The stool is designed for sitting astride the narrower side. Sturdy metal legs with lockable castors. Heavy duty wheely stool available for weights up to 150 kg and an extra 2"around the top. Heavy duty wheely stool testimonial "The wider seat/base makes it feel significantly more stable than the smaller version. I don’t feel the need to sit at an angle towards the corner. My bottom is well supported. The castors move extremely smoothly, even on a (thin) carpet and the brakes are much easier to dis/engage." Jane Lawrence, Paediatric Manual Handling Training Consultant User Guides: https://smirthwaite.com/wp-content/uploads/2020/01/Therapy-Stools-IFU.pdf Size Guide: Measurement Standard Heavy Duty Code 4182 4193 Width (inches) 17.7 17.7 Height min (inches) 13.4 13.4 Height max (inches) 18.1 18.1 Max user weight (Ibs.) 220 330