The Active User Back is a tightened, out-of-the-box Back that is ready to use but still shape-adjustable if needed. The Active User Back is our entry level, simplest-to-use support. The next level in 'support sequence' are the Standard and Tall Backs.
Lower Active User Back with Pop-on cover
Middle Active User Back (shown without cover)
Matrix Active User options: | |
---|---|
Pop-on cover | ![]() |
T-Trak Lite mount, or | ![]() |
Pivot mount | ![]() |
2-Ball Layout | ![]() |
Height x Width (Circumference) | Small | Medium | Large |
---|---|---|---|
Middle Back | 340 x 400 13.4 x 15.8 | 385 x 450 15.3 x 17.8 | 430 x 530 17 x 21 |
Lower Back | 280 x 400 11 x 15.8 | 360 x 510 14.3 x 20 | 430 x 580 17 x 22.8 |