HEST Dually Wide Extension (20 × 72) for Mid-Size Trucks
Extend your Dually Wide HEST Mattress with the Dually Extend 72 to make your sleeping space in your Tune M1 even bigger to stretch out in comfort. Sewn-in buckles let you attach the extension to your current HEST mattress so the panels stay together. This upgrade is compatible with the King Size Sliding Bed Extension dimensions in mid-size trucks.
$ 249.00 USD
Features / Specs
Features
- Fits Tune M1 bed dimensions in mid-size trucks
- Can also be used as a narrow bench seat cushion
- Cover is dirt- and water-resistant, and it is removable and machine washable
Specs
- 20” x 72” x 3.9”
- Multi-layer Memory Foam
Features / Specs

Features
- Fits Tune M1 bed dimensions in mid-size trucks
- Can also be used as a narrow bench seat cushion
- Cover is dirt- and water-resistant, and it is removable and machine washable
Specs
- 20” x 72” x 3.9”
- Multi-layer Memory Foam