I bought this from Amazon and it was a bit of a punt as to whether it would fit... It didn't!

Amazon description:

Secure Non-Slip Snug Fit: Tired of constantly adjusting your ottoman slipcover every single day? Our slipcover is equipped with reinforced elastic sewn all the way around the bottom hem. It effectively prevents slipping, shifting and wrinkling, keeping the stretch ottoman cover tightly fixed far better than ordinary generic covers, so you no longer need frequent rearrangement.

Perfect for Indoor & Pet-Friendly Households: Designed exclusively for indoor daily use at home. Crafted from thick premium jacquard woven fabric, it shields your footstool’s original upholstery from dust, stains, daily wear and accumulated pet hair. It works as a great protective barrier for families with cats, dogs and kids.

Premium Stretch Fabric & 4 Universal Sizes: Made of 90% Polyester + 10% Spandex blended fabric, it features great two-way elasticity and stable shape retention. Our slipcover fits most square and rectangular ottomans, footstools & poufs.Please carefully measure your ottoman before ordering to pick the correct size.

Versatile Home Decor & Furniture Renewal: Refresh your worn, faded old footrest effortlessly with our solid-color slipcovers to upgrade your living space. Available in dozens of neutral tones, they match all modern home styles easily. Thanks to the highly stretchy fabric, it perfectly accommodates small, medium, large and oversized ottoman benches.

Easy Care & Machine Washable: These stretch slipcovers are fully removable and convenient to clean.Machine wash separately in cold water on gentle cycle; do not use bleach. Tumble dry on low heat or air dry naturally to maintain elasticity, fabric texture and color vibrancy for long-term use.

Product specification
Material: Premium Blended Fabric (90% Polyester + 10% Spandex Waffle Jacquard)
Applicable Dimension Range:
Height: 15.0–17.7 inches | Width: 13.8–29.9 inches | Length: 19.7–63.0 inches
Available Base Color: Ivory (8 neutral solid colors optional)
Fabric Design: Solid plain tone, thick textured waffle jacquard weave
Fastener Design: Full Surround Reinforced Elastic Hem (No extra zipper closure needed)
Application Scene: Indoor living room, bedroom, entryway exclusive use

Link to listing: https://amzn.eu/d/00Gd9He7

Ottoman cover, beige (Prenton CH43)