充气垫

充氣墊
chōngqìdiàn

air mattress; air bed; lilo

Wiktionary

Entry Composition

1 充气 chōngqì to pump air (into sth); to inflate
2 垫 diàn
  1. pad
  2. cushion
  3. mat
  4. to pad out
  5. to fill a gap
  6. to pay for sb
  7. to advance (money)