Tailored Sheet for Bunk/Cot Mattress: This stretchy sheet fits for most mattress up to 10" depth. Great for camping and RV cots, also used in folding beds, camp bunk beds, boys & girls beds. Snug fit for sizes: 28 x 72 (75), 30 x 75, 33 x 75 (width range: 28"-34", length range: 72"-80").
eBay