All materials used in the manufacture of all GEMS products are local and local and meet all quality specifications and guarantees at state and European level. All the structures of GEMS products are manufactured at Flanders pine wood with applications of beech at certain points to reinforce the structure. All the wood used comes from sustainable forests in which the trees consumed are replaced and have the PEFC and FSC certified. Suspension is by means of a frame of steel springs The 3.8 mm thick zigzag pattern gives greater rigidity to the structure and makes it unalterable over time. The entire structure is covered with high density foam rubber, varying from 30 to 60kg/m3. The adhesive product used in production is water-based, without petroleum-based solvents. The cushions of seat are manufactured with high-density foam rubber, and you can choose the hardness level between soft, intermediate or hard (intermediate hardness is used as standard).You can also opt for a viscoelastic cover or a feather cushion. The cushions of backrest are made up of a protective cover compartmentalized in anti-mite and anti-allergenic fabric, filled with siliconized hollow fiber (acrylic, anti-allergenic and recyclable). The legs are made of beech beech and can be varnished in natural color, oak, walnut or wenge.