This is a brand-new structure foam pump with a compact air chamber. It is designed to adapt to international standard specifications, featuring two ultra-small closure sizes, 20/410 and 24/410. This addresses the market gap for smaller closure foam pumps. Previously, most foam pumps on the market had a closure larger than 28mm. The introduction of this foam pump means that you can now conveniently carry foam products anytime, anywhere, even fitting them into your handbag. MARTWARE is dedicated to providing stable and reliable foam pump products.