【For Litter System】The size of 16.9 "x11.4", providing 100% coverage of the litter box's bottom, it ensures there are no gaps or uncovered areas. This eliminates the risk of excess urine leaving the bottom damp, preventing the growth of unpleasant odors. There are differences in the size of different litter system, please confirm the drawer size before purchasing. 【Super Absorbent】6-layer water-absorbing structure, high-quality water-absorbing polymer raw materials, which make it could effortlessly absorb up to 850ml of liquid. When used directly as a pee pad, it could last for 2-3 days without replacement. When used as refill of litter box, its absorbency ensures it can be used for up to 6-7 days, delivering unprecedented durability and convenience. 【Odor-Control】Crafted froml activated carbon, our cat pee pads boast an adsorption ability. This feature not only purifies the air but also eliminates unpleasant odors of urine, which ensuring a fresh and healthy environment for your cat! 【Leak-Proof】Surface grid efficiently directs liquids, swiftly absorbing liquid to maintain a dry surface. The bottom PE film, offering 100% leakage-proof, which prevents urine leakage from dirtying the floor or causing moisture in the litter system. 【Easy Cleanup】Could better keep the bottom of the litter box clean and dry, reducing the difficulty of cleaning the bottom of the litter box. Easy to clean and replace, just gently roll it up, throw it and then replace with a new pad. Cat Pad Refills for Litter Box, 16.9-inch x11.4-inch Odor Control Cat Pee Pads with Activated Carbon for Breeze Litter System(30Counts/Purple)