Ivar is available in 2 models, Model A is the standard. Model B has a smaller smoother knot and has more details with veins on his shaft. (see photos for the difference) 
 
Ivar is a special creation. He has a special pulsing knot that feels just like the real deal! With 7 vibrating/pulsing functions, this also causes the cum tube to pulsate as well making the fluids that come out pulse for that extra internal tease! Comes with remote - batteries not included. You do not need to order the add on for this toy as it comes with the product.
 
Ivar is a shorter toy for those that can't handle length, but his knot will please you like you've never imagined! This is a premium grade specialized sex toy, Ivar is a 2 part toy that is assembled to give it the most realistic look and feel. This toy has a split feature with a firm base core that is inside the sheath for a  better grip during use. The main shaft is inserted into the sheath and permanently welded inside creating a perfect looking cock and sheath combo. 

These toys are made with UlvSkin™ my special blend of platinum silicone products that give these toys a super realistic feel of actual skin. 
 
Measurements for Model A are:
Usable Length - 8"
Shaft Length - 3"
Total Length - 11" (including balls)
Knot Diameter - 4"
Knot Circumference - 11" 
Side Girth of Mid Shaft - 2.5"
 
Measurements for Model B are:
Usable Length - 9"
Shaft Length - 4"
Total Length  - 12" (including balls)
Knot Diameter  - 3.5"
Knot Circumference  - 10"
Side Girth of Mid Shaft - 2.5