Choosing the right size Adirondack chair involves considering the user’s height and comfort. Standard models have seat heights around 14 to 16 inches from the ground, with a backrest height of 30 to 40 inches. Taller or plus-sized versions are available with higher seat heights and wider armrests for a more comfortable fit. Children’s Adirondack chairs are scaled-down versions. Always check the chair’s dimensions and ensure there’s enough space for proper seating posture. If you plan to add cushions, take that into account when selecting the size.