дамски пижами
https://textile.bg/39-%D0%BC%D0%BE%D0%BC%D1%87%D0%B5%D1%82%D0%B0
Are you describing a 'sling' as in a sort of bag or strap to carry points, or are you asking about a 'sling' in a medical context, like an arm sling for sustaining a hurt arm?