A flexible cold weather survival suit for a user comprising: a first inner thermal layer forming a central cavity pneumatically connected to two leg extensions, two arm extensions and a head covering having a face opening, wherein said thermal layer includes one or more attachment components at various locations (706/708/710) of said thermal layer's exterior; wherein said first inner thermal layer comprises an internal lining layer and a thermally insulating bubble layer attached together, wherein said thermal layer bubbles are comprised of similar sized bubbles that have a diameter of between 5 mm and 15 mm and a height of 3 mm to 6 mm; a second waterproof layer dimensioned to envelop said inner thermal layer, said waterproof layer including one or more internal attachment components (1002/1006/1008) complementary to said thermal layer's attachment components (706/708/710), so as to couple said waterproof layer together to said first inner thermal layer; wherein said second waterproof layer is formed from a waterproof material, including a flexible hood having a seal around the user's face area of said thermal layer's head covering; said second waterproof layer has one or more front opening/closing mechanical components for sealing the interior of said second waterproof layer, including said thermal central cavity wherein: said internal lining layer comprises of one or more of: ripstop fabric or ripstop nylon; said thermally insulating bubble layer comprises of one or more of: bubble layer, bubble layer with foil, radiant foil or aerogel; and said second waterproof layer comprises of one or more of: plastic film, polyether film or polyurethane. a first inner thermal layer forming a central cavity pneumatically connected to two leg extensions, two arm extensions and a head covering having a face opening, wherein said thermal layer includes one or more attachment components at various locations (706/708/710) of said thermal layer's exterior; wherein said first inner thermal layer comprises an internal lining layer and a thermally insulating bubble layer attached together, wherein said thermal layer bubbles are comprised of similar sized bubbles that have a diameter of between 5 mm and 15 mm and a height of 3 mm to 6 mm; a second waterproof layer dimensioned to envelop said inner thermal layer, said waterproof layer including one or more internal attachment components (1002/1006/1008) complementary to said thermal layer's attachment components (706/708/710), so as to couple said waterproof layer together to said first inner thermal layer; wherein said second waterproof layer is formed from a waterproof material, including a flexible hood having a seal around the user's face area of said thermal layer's head covering; said second waterproof layer has one or more front opening/closing mechanical components for sealing the interior of said second waterproof layer, including said thermal central cavity wherein: said internal lining layer comprises of one or more of: ripstop fabric or ripstop nylon; said thermally insulating bubble layer comprises of one or more of: bubble layer, bubble layer with foil, radiant foil or aerogel; and said second waterproof layer comprises of one or more of: plastic film, polyether film or polyurethane. said internal lining layer comprises of one or more of: ripstop fabric or ripstop nylon; said thermally insulating bubble layer comprises of one or more of: bubble layer, bubble layer with foil, radiant foil or aerogel; and said second waterproof layer comprises of one or more of: plastic film, polyether film or polyurethane.