Life4u Tea Infuser Borosilicate Glass Water Bottle with Strainer Filter,Tumbler 500 ml

Tends to leak a little so you have to readjust the caps. The filter attachment is a bit fiddly and get cross thread easily. This is a single walled item so if you are using it for hot drinks if can't be held without the sleeves that are provided. The sleeves provide are a double open ended one which tends to slip down when you hold it when its hot & a punch style which is a lot better.