Rollaway and folding beds come in a few specialty sizes, so it helps to measure your mattress (length × width × thickness) before you shop.

• Cot/Narrow bunk sizes: Often around 25–33 inches wide and about 75 inches long.
• Wider folding beds: Some styles are closer to 46–48 inches wide and about 75 inches long.
• Mattress depth: Many rollaway mattresses are relatively thin, commonly around 4–6 inches. Look for fitted sheets with matching pocket depth.

On Walmart.com, you’ll see terms like “cot,” “narrow twin,” “RV bunk,” and “rollaway” in the product titles. Matching those terms to your measurements can make sizing easier. When in doubt, check the sheet’s dimensions in the product details for the closest fit.

If you’re making a rollaway or guest bed, a simple order can make it comfortable and neat:

1. Mattress protector or pad (optional): Adds a clean, soft layer and can help sheets grip.
2. Fitted sheet: Match length, width, and pocket depth to the mattress.
3. Flat sheet (optional): Place it evenly with the finished edge at the head, then tuck at the foot if you like.
4. Blanket/comforter or quilt: Choose a lightweight layer if you’ll be folding the bed for storage.
5. Pillowcases: The finishing touch for your pillows.

This sequence works for most setups. Adjust layers based on the season and how you plan to fold and store the rollaway.

Hospital corners can help a flat sheet stay tidy on a rollaway or cot. Here’s a quick method:

1. Tuck the foot: Drape the flat sheet evenly and tuck the excess under the mattress at the foot.
2. Make the triangle: At one bottom corner, lift the side overhang up to form a 45° triangle and lay it flat on top of the mattress.
3. Tuck the side: Tuck the hanging piece along the side under the mattress.
4. Drop and tuck: Drop the triangle flap and tuck it under for a clean edge.

On thinner mattresses (often 4–6 inches), avoid over-tightening so the sheet doesn’t pop off. Repeat on the other corner for a neat finish.

Rollaway beds and compatible sheets are still widely offered, and you can shop a variety on Walmart.com and in select stores (availability can vary by location).

• Search terms to try: “rollaway bed sheets,” “cot sheets,” “narrow twin,” or “RV bunk.”
• Use filters: Narrow by size (for example, 30 × 75 inches) and pocket depth to match your mattress.
• Product details: Check length, width, and mattress thickness compatibility before adding to cart.
• Convenience: Choose pickup or delivery options that work for your schedule where available.

If you’re outfitting a guest setup or a camper, measuring first and filtering by size can help you find the right fit faster.

Slippage usually comes down to fit and grip. A few adjustments can help:

• Match the size: Measure length, width, and thickness. Many rollaway mattresses are 4–6 inches deep—choose a pocket to match.
• Look for full-elastic corners: Fitted sheets with elastic all around often hold better on portable beds.
• Consider fabric: Knit or slightly stretchy weaves can hug the mattress more closely.
• Add a grippy layer: A mattress protector or pad with a textured underside can reduce sliding.
• Use sheet straps: Clip-on sheet grippers under the mattress can add extra hold without much bulk.

Pre-washing sheets per the care label can also help them settle. Results can vary based on mattress material and how often the bed is folded.