If you own a JOYMOOP flat mop, you definitely need these replacement pads! This 4-pack gives you fresh, effective cleaning power whenever your current pads start to wear out. The 13-inch size fits perfectly with JOYMOOP's flat mops and works with their Bucket#13, Bucket#2, and Bucket#2124 systems. What I love is that you get two different types - the grey pads are super absorbent for wet cleaning, while the stripe pads have extra nylon filament that's perfect for heavy-duty dirt and grime. They work way better than cotton pads or disposable refills, grabbing more dirt and absorbing more liquid with each pass. The microfiber material is machine washable too, so you can use them over and over again. Just toss them in the wash when they get dirty, and they're good as new! When it's time to replace them (usually every 1-2 months depending on how much you clean), make sure those three slots line up perfectly with the tabs on your mop head for secure attachment. Pro tip: using these with JOYMOOP's designated buckets makes cleaning so much easier and more efficient. Whether you're doing quick daily sweeps or deep cleaning sessions, having fresh pads on hand ensures your floors get that sparkling clean finish every time. Seriously, these are game-changers for keeping your hard floors looking their best without breaking the bank on disposable pads!