Lower leg stretch board (Hangleton BN3)

(Description taken from https://www.healthandcare.co.uk/calf-stretchers/physioworx-stretch-board.html)

Ideal for treating lower leg and foot tension
Designed to increase flexibility and reduce muscle tightness
Gives relief from calf muscle strains, plantar fasciitis and Achilles tendon injuries
Fully adjustable with six angle settings ranging from 15° to 39°
Reversible foot plates for optimal user comfort and positioning
For home exercise and rehabilitation settings