The A.T.P. version is composed of 26 beech plywood slats, 38x8 mm wide, steam-bent, plus 6 reinforcement double slats in the central part, adjustable as desired through rigidity regulators. The slats are positioned in SEBS supports.

The Compact A.T.P. has 2 lifts, adjustable in 12 positions, through ratchets, thus ensuring, maximum comfort and relaxation.

In the double version the 40 mm central spar and the 5th central foot guarantee maximum strength. In the 120 cm version the slats are 10-12 mm thick.