Panthera Backrest S3 comes in two versions: Backrest S3 and Backrest S3 height adjustable. 

Backrest S3
The original Panthera fixed backrest combines lightweight design with support and comfort. Available in height increments of 5 cm (from 20 to 45 cm), it lets you choose the size that best fits your seating preference - without adding extra weight.

Backrest S3 height adjustable
This backrest offers stepless height adjustment for users who want flexibility or a more precise height requirement. Two adjustment ranges are available: 30–40 cm and 35–45 cm, making it easy to find a position that suits your preferences. The backrest has height indication lines to support precise and symmetrical alignment.