Fur garments.

"Unlike the unfortunate Wehrmacht soldiers on the Eastern Front who suffered the horrors of the Russian winter of 1941/42 in clothing suitable only for moderate climates, the soldiers of the Afrikakorps were well equipped.
As soon as German involvement in the Merditerranean area and Middle east began to seem likely the Tropical Institute of Hamburg University was commissioned to develop a range of tropical uniforms, and by late 1940 large stocks were allready available"
_{Source: Osprey Elite series #34 "Afrikakorps 1941/43".} 
"Special equipment items were manufactered for use in North Africa from late 1940 to 1942 to withstand the rigours of a hot dry climate. For almost all items of the basic Continental rifleman's equipment there was a tropical counterpart.
_{Source: Osprey Men at arms series #234 "German combat equipment 1939-1945".}
"In the summer of 1941, Commanding General Friedrich Paulus repeatedly asked Adolf Hitler for special winter uniforms. The answer was simple but nonetheless proofed to be a fatal error. It translates as follows:
"I do not want to hear anymore of those arguments about the difficulty of supplying our troops during winter. To have any concerns about this is preliminary, as there will not be any winter warfare. I hereby prohibit you to further talk to me about such events".
_{Source: "Winteruniforms of the German army and luftwaffe in WW2 by Vincent Slegers".}