The Boundless – 4.75 Inch Dong (Smooth) is suitable for front and back entry with it’s seamless design. 4.75″ Dong = an insertable length of 10cm the width is 2.5cm which is not too small nor too big a great little starter size. The seamless dong means it’s smooth all over for total enjoyment. As it’s a low and smaller dong you are able to play in many different ways. Just make sure you use some good water based lubricant. Smooth Silicone Design I don’t think I can say this enough, it’s smooth from top to bottom of the dong and silicone is a great material with toys. Suction Base means you can play with the Boundless on any clean and dry surface, take it for a ride. Harness Compatible with most universal harness you can slip the Boundless into your O ring, and really step up the fun. Boundless – 4.75 Inch Dong (Smooth) is a curved silicone dildo/probe which can be used on it’s on or with a strap-on. 4.75″ Dong Smooth Silicone Design Suction Base Harness Compatible