1. Rocky® Men's Mid Weight Wicking Thermal 2pc Top and Pant Underwear Set (Xlarge, Black) (Click Link to Check Price on Amazon)
Editor's Rating : 9 out of 10
Recommend to order 1 size up for comfort fit Includes: Thermal 2pc set one (1) top and one (1) bottom65 % Cotton and 35% Polyester Shrinkage controlled for lasting size and shape.

2. Men's Ultra Soft Thermal Underwear Long Johns Set with Fleece Lined (Large, Grey) (Click Link to Check Price on Amazon)
Editor's Rating : 9.5 out of 10
Size guide: Please order 1 size larger than you normally wear2 Piece thermal set they are ultra soft, warm, comfortable and great to wear at home or add an extra layer of warmth under your clothes.

3. BU-MHS100-BLK_X-Large Tesla Blank Men's Microfiber Fleece Lined Top & Bottom Set MHS100 (Click Link to Check Price on Amazon)
Editor's Rating : 9.1 out of 10
Please order one size up for a more comfortable fit.Excellent mobility and moisture wicking. Heatfit design

4. Ekouaer Men's Snowboarding Base Layer Leggings Long Thermal Underwear Set(Black,Small) (Click Link to Check Price on Amazon)
Editor's Rating : 9.5 out of 10
2 Pieces Thermal Set (Top & Bottom) are made with 95% Cotton and 5% ElastaneBase-layer-underwear closure,Tagless Long sleeve top,Elastic waist with convenient fly front

5. Indera Men's Traditional Long Johns Thermal Underwear Top, Natural, X-Large (Click Link to Check Price on Amazon)
Editor's Rating : 8.9 out of 10
Shrinkage ControlledProduct comes as OFF WHITE (Natural)