indoor slippers; house slippers
Refers to slippers worn inside the house, typically to keep feet warm or floors clean. Often used in contrast to outdoor shoes.
In Japan, you change into indoor slippers when entering a house.
I want warm house slippers for winter.
上履き refers to indoor shoes worn at school or certain facilities, often with a specific uniform style, whereas 部屋履き is casual house slippers.
Standard kanji spelling.
Variant spelling using kana for the second part; less common but still used.
Compound of 部屋 (へや, 'room') and 履き (はき, the continuative form of 履く 'to wear on the feet'). Literally 'room-wear'.