Chair Cap: 1" (25mm) inner diameter opening to prevent legs from slipping; outer diameter: 1.1" (28mm). (Note: Please check your chair leg size before ordering.) High Quality Odorless Rubber Superior: The chair leg caps are made of durable, high quality rubber that does not emit a strong chemical odor. They not only provide long-lasting protection for chair legs, but also protect carpets from obstacles and hard surfaces, dents, stains and scratches. NOISE REDUCTION: Rubber chair legs are specially treated to eliminate loud noises when moving a table or chair. It is always annoying to hear noises when concentrating. Such as reading. NON-SLIP BENEFITS: Rubber chair legs keep furniture in place during use. And you don't have to worry about them falling off the chair, especially with children. Indoor and outdoor use: You can use them for indoor and outdoor chairs. These rubber chair leg covers are suitable for the legs of many furniture, such as chairs, stools, tables, sofas, beds,