Spruce swimming pools are made of class 4 impregnated pine wood. The walls of the swimming pool are 45 mm thick and therefore extremely well thermally insulated. The swimming pool liner is in plain blue and 20 thou guage. This swimming pool is supplied complete with:- liner sand filter (8.5m3/hour) filter sand skimmer & inlet fitting underfelt stainless steel ladder wood ladder Also suitable for installation in-ground due to the impregnated timbers. Warranty: 10 years on the wooden parts; 2 years on the stainless steel ladder and liner. The pool is easy to assemble- it must be sited on firm, level and smooth ground. A concrete base is recommended. Please Note: The pump and filter need to be located 3.5 metres away from the pool and must be connected to a suitable weatherproof RCD-protected socket outlet. We recommend that filtration is turned OFF when the pool is in operation. We recommend a smooth concrete slab as a suitable base- contact a reputable local builder for advice on local soil conditions. Failure to set up the pool on a flat, level compact ground could result in the pools collapse. Safety: Children should be supervised at all times when in and near the pool. Gender: Unisex. Age Group: Kids. Material: Other Material.