Abstract: Booster for raising the seat height of a chair includes an extendable frame with a seat and backrest attached thereto, at least one handle provided on the frame for placement over the backrest. The frame has two telescopic tubes, each formed by at least two telescopic elements that slide into one another, respectively an inner element and an outer element. A brake is provided to fasten the telescopic elements in a certain position with respect to one another that is continuously adjustable, and at least two elements have an asymmetric cross-section with a smaller width than length measured in two directions transverse to one another. The brake acts as a stop rotatably affixed to an end of the inner element but axially locked with respect thereto, and is rotatable between a position in which it is clamped in the outer element and a position in which it is separate therefrom.

Abstract: Cot, characterized in that it consists of two shell parts (2, 3) which are made of a hard material and which are hinge-mounted, whereby an upholstery (4) is provided around both shell parts (2, 3), and whereby both shell parts (2, 3) can mutually hinge between an open position, in which both shell parts (2, 3) are in line, and a closed position, in which both shell parts (2, 3) are folded together.