★This bed is "customer assembled furniture"★ For "customer-assembled furniture," we ask that customers unpack, assemble, and install the product themselves. Mattress bed, slatted, semi-double, mattress with legs, bottom bed, premium pocket coil mattress included, bed, legs 15cm Proof of safety and security [Quality guaranteed] Mattresses that meet the Japanese Industrial Standard JISS 1102 Durability tests are conducted. Place it in the center of the mattress, where your hips are the heaviest part of your body. The durability of the product is tested by repeatedly applying a load of approximately 100 kg 80,000 times. Durability that allows customers to use it for a long time We guarantee the quality for up to 5 years.