The Brookstone Automatic Golf Ball Return Indoor Putting Practice Cup is a multicolor putting cup designed for indoor use. It is made of durable plastic and runs on batteries, providing a convenient and portable option for practicing putting at home. This training aid is suitable for golfers of any experience level and age group, offering automatic ball return functionality to enhance putting skills. Perfect for honing your putting technique, this product is best for indoor use and is a part of Brookstone's Golf Supplies line.