The Trinity Twister is a Borosilicate Glass dildo with a ribbed shaft and angled head. The angled head works well when you want to directly stimulate the G-Spot or the P-Spot (depending on who you are). Borosilicate, as a material, is good because it's non-porous, hypoallergenic and durable. It is also compatible with all major lubricants. The Trinity Twister measures 6.5" in length and 1" in width.