Medium to advanced skills. You need yarn (beer mittens: Sandnes Garn Perfect is: DK, 8 ply, 11 wpi. You need 100 grams, 199,3 meters or 218 yards. Butt cushion, yarn that felts: Sandnes Garn Fritidsgarn is: bulky, 12 ply, 7 wpi. You need 300 grams, 422,5 meters or 462 yards), needles (5,5 mm/US 9 and 3,5 mm/US 4) and one button. Knitted both in the round and back and forth. One size but easy to make bigger.