Firmly holding its segment of the market mechanism "dolphin". The design provides a solid framework, often used in angular patterns. Reliable steel mechanism that guides hardwood can easily expand the sofa. The principle of transformation - putting forward the mechanism of the niche under the seat, you pull on the special loop-handle, and install lift soft element in a horizontal position, which stykuyas with seat forms a bed. Advantages: durable and reliable mechanism, creates a smooth and spacious bed. Corner models have a spacious linen box. Access to linen drawers makes a special mechanism for recovery.