This is a great little item to have in your kitchen drawer when you fancy something a bit more exotic in the tea department and fancy a change from a tea bag! Great idea of the infuser being shaped like a submarine and a yellow one at that. The submarine itself is quite rubbery, and the end just pulls off and clicks back on for a rubbery seal leaving the contents safely inside. Fill with your choice of loose tea and prepare to explore the depths of your tea cup. Comes with a handy clip for the side of your cup so you don't need to embark on a deep tea rescue mission. Easy to empty and rinse out too. Love it !!!