Where does “kołderka” come from?

kołderka (Polish) comes from Polish kołdra, from Italian coltre, from Italian coltrice, from Late Latin culcitra, from Latin culcita, from Proto-Indo-European kʷel- — to turn.

Ancestry of “kołderka”, step by step

Step	Language	Word	Meaning
1	Polish	kołdra	comforter, quilt, duvet
2	Italian	coltre	blanket or quilt; coat, cover, layer; A funereal...
3	Italian	coltrice	mattress
4	Late Latin	culcitra	Alternative form of culcita
5	Latin	culcita	mattress, pillow, cushion
6	Proto-Indo-European	kʷel-	to turn

Every word from Proto-Indo-European kʷel- →Every word from Latin culcita →Every word from Late Latin culcitra →