Not sure which size? Here's a quick guide:

XXL: Full Bed & Maximum Coverage (57" x 80" / 144 x 203 cm)
Ideal for queen or king mattresses 
Great for overnight incontinence or heavy leaks 
Perfect for family lounging or large sofas
Best for: full-bed waterproof protection

XL: Bed + Couch Coverage (57" x 40" / 144 x 101 cm)
Fits queen beds or two-seater couches · Ideal for side sleepers or targeted protection · Works as a large waterproof couch protector
Best for: best balance of coverage + flexibility

Original: Everyday Best-Seller (28" x 40" / 71 x 101 cm)
Perfect for twin & full beds 
Great for chairs, single-seat sofas, or travel 
Ideal for period care, light incontinence, daily use
Best for: most versatile reusable waterproof mat

Mini: Small Messes & On-the-Go (18" x 28" / 45.7 x 71.1 cm)
Great for pets, puppy training, or small spaces · Perfect for travel, car seats, or quick protection · Ideal for targeted leaks
Best for: quick, portable protection

Quick pick: 
Full bed / overnight → XXL  
Shared spaces / couch → XL  
Everyday use → Original 
Travel / pets → Mini
When in doubt, go bigger; more coverage, less stress.