Know what arrives in the box—and measure the bed you actually share—before choosing Full/M or Queen/L.
By CASUCA
“Four-piece bedding set” can sound as if it includes everything needed to make a bed. It does not always mean that. The four pieces may be covers rather than filled bedding, and familiar size labels can hide important differences in width, length and pocket depth.
Each CASUCA four-piece bedding set includes one fitted sheet, one duvet cover and two pillowcases. Pillow inserts and duvet inserts are not included. Choose your size by comparing the listed measurements with your mattress and existing inserts—not by relying on Full or Queen alone.
This guide shows exactly what to measure and how the Cooling and Peecatboo sets differ.
What are the four pieces?
The set contains one fitted sheet, one duvet cover and two matching pillowcases.
The count works like this:
- one fitted sheet;
- one duvet cover;
- two pillowcases.
The fitted sheet wraps the mattress. The duvet cover goes around a compatible duvet insert. The two pillowcases fit compatible pillow inserts.
Neither the duvet insert nor the pillow inserts are included. If you already own them, measure them before ordering. If you do not, plan to purchase them separately.
Why the size name is not enough
Full/M and Queen/L are size families, not a guarantee of fit for every North American bed.
Mattress dimensions can vary by market, brand and product type. A mattress topper adds depth. Duvet inserts sold under the same general size name can also differ by several inches.
That means a shopper can choose the familiar-looking label and still end up with a fitted sheet that is too short, a pocket that cannot cover the mattress depth or a duvet cover that does not match the insert.
Use the size name to narrow the options. Use the measurements to make the decision.
Measure these three things before ordering
Measure the mattress top, total mattress depth and duvet insert.
1. Mattress width and length
Remove loose bedding and measure straight across the top surface. Do not estimate from the bed frame, which may be wider than the mattress.
2. Total mattress depth
Measure from the top sleeping surface to the bottom edge of the mattress. Include any topper that will remain on the bed. Compare that number with the fitted-sheet pocket depth.
3. Duvet insert width and length
Lay the insert flat and measure edge to edge. The goal is to compare the actual insert with the actual duvet-cover dimensions, not two package labels.
It is also worth measuring your pillow inserts. CASUCA pillowcases measure 18.9 × 29.1 in / 48 × 74 cm.
Cooling Bedding Set measurements
The Cooling set uses a 13.8-inch / 35 cm fitted-sheet pocket in both sizes.
| Cooling set size | Fitted sheet | Pocket depth | Duvet cover | Pillowcases |
|---|---|---|---|---|
| Full/M | 57.1 × 72.8 in / 145 × 185 cm | 13.8 in / 35 cm | 78.7 × 90.6 in / 200 × 230 cm | Two, each 18.9 × 29.1 in / 48 × 74 cm |
| Queen/L | 66.9 × 74.8 in / 170 × 190 cm | 13.8 in / 35 cm | 86.6 × 94.5 in / 220 × 240 cm | Two, each 18.9 × 29.1 in / 48 × 74 cm |
Start here if cool-touch comfort is your priority and the fitted-sheet dimensions match your mattress.
Peecatboo Bedding Set measurements
The Peecatboo set uses a deeper 15.7-inch / 40 cm fitted-sheet pocket.
| Peecatboo set size | Fitted sheet | Pocket depth | Duvet cover | Pillowcases |
|---|---|---|---|---|
| Full/M | 59.1 × 78.7 in / 150 × 200 cm | 15.7 in / 40 cm | 78.7 × 90.6 in / 200 × 230 cm | Two, each 18.9 × 29.1 in / 48 × 74 cm |
| Queen/L | 70.9 × 78.7 in / 180 × 200 cm | 15.7 in / 40 cm | 86.6 × 94.5 in / 220 × 240 cm | Two, each 18.9 × 29.1 in / 48 × 74 cm |
Start here if you need the deeper pocket, prefer the two-tone design and can use the designated pet-hair-resistant face side as instructed.
How the two sets differ
The duvet covers and pillowcases share dimensions; the fitted sheets and pocket depths differ.
For the same size family, both sets use the same duvet-cover and pillowcase measurements. The main fit difference is the fitted sheet:
- Cooling Full/M: 145 × 185 cm with a 35 cm pocket;
- Peecatboo Full/M: 150 × 200 cm with a 40 cm pocket;
- Cooling Queen/L: 170 × 190 cm with a 35 cm pocket;
- Peecatboo Queen/L: 180 × 200 cm with a 40 cm pocket.
The other difference is the comfort and surface brief. Cooling is the starting point for warmer sleepers. Peecatboo offers a deeper fitted-sheet pocket, a two-tone design and a designated face side intended to help compatible loose fur remain easier to remove.
Choose for fit first. Then choose between the product experiences.
Check the duvet insert, too
A fitted sheet can fit while the duvet insert still does not match the cover.
The Full/M duvet cover is 78.7 × 90.6 in / 200 × 230 cm. The Queen/L duvet cover is 86.6 × 94.5 in / 220 × 240 cm.
Compare those numbers with your insert. A significantly smaller insert may shift or leave loose areas inside the cover. A larger insert may bunch and change how the finished bed feels. Internal ties can help hold a compatible insert in place, but they do not correct a major size mismatch.
The pre-order fit check
Do not place the order until every line below has a measured answer.
- Mattress width: ______
- Mattress length: ______
- Mattress plus topper depth: ______
- Duvet insert width: ______
- Duvet insert length: ______
- Pillow insert width and length: ______
- Preferred product: Cooling / Peecatboo
- Chosen size: Full/M / Queen/L
If your measurements sit outside the listed dimensions or you are unsure about the amount of allowance needed, contact CASUCA before ordering.
Frequently Asked Questions
Confirm the pieces, measurements and insert requirements before ordering.
Does a four-piece set include four different products?
It includes three product types across four pieces. You receive one fitted sheet, one duvet cover and two pillowcases.
Are the duvet and pillow inserts included?
No. The set contains covers only. Measure your existing duvet and pillow inserts or purchase compatible inserts separately.
Which set has the deeper fitted-sheet pocket?
Peecatboo has a 15.7-inch / 40 cm pocket. The Cooling set has a 13.8-inch / 35 cm pocket.
Are CASUCA Full/M and Queen/L standard U.S. sizes?
Do not assume an exact match from the name. Compare the listed inch and centimeter measurements with your own mattress and inserts before ordering.
What if my mattress uses a topper?
Measure the mattress and topper together. The total depth must fit within the fitted sheet's listed pocket depth.
Measure once before the shared-bed routine begins
Actual measurements prevent more fit problems than familiar size names do.
Choosing the right size is not the glamorous part of buying bedding, but it is the part that prevents most avoidable surprises. Know what the four pieces are, measure the mattress and inserts, and let the actual numbers make the final decision.
Explore CASUCA Bedding
Read the CASUCA FAQ
Contact CASUCA About Sizing
Once your measurements are ready, compare CASUCA bedding for a cat-shared bed by surface cleanup, sleep temperature, fit, care and product choice.