Air mattress

An air mattress comprising:

• an inflatable main body which includes
• an upper sheet made of a heat-sealable plastic material and having front and rear edges and opposite lateral edges, said upper sheet further having a tufted top surface;
• a front sheet made of a heat-sealable plastic material, said front sheet having an upper edge which is sealed to said front edge of said upper sheet, a lower edge and opposite lateral edges interconnecting said upper and lower edges, said upper edge of said front sheet being longer than said front edge of said upper sheet and having excess portions on two sides of said front edge of said upper sheet;
• a rear sheet made of a heat-sealable plastic material, said rear sheet having an upper edge which is sealed to said rear edge of said upper sheet, a lower edge and opposite lateral edges which interconnect said upper and lower edges of said rear sheet, said upper edge of said rear sheet being longer than said rear edge of said upper sheet and having excess portions on two sides of said rear edge of said upper sheet;
• and
• a lower sheet made of a heat-sealable plastic material, said lower sheet having a front edge, a rear edge and two opposite lateral edges interconnecting said front and rear edges of said lower sheet, said front edge of said lower sheet being sealed to said lower edge, said lateral edges, and said excess portions of said upper edge of said front sheet, said rear edge of said lower sheet being sealed to said lower edge, said lateral edges, and said excess portions of said upper edge of said rear sheet, said lateral edges of said lower sheet being sealed to said lateral edges of said upper sheet, wherein an air receiving space is confined by said upper, lower, front and rear sheets.