The design is purely to provide a comfortable gripping position whilst riding a bike. I'm inspired by Gaudi and the way he used to use clay to form ergonomic and aesthetic handles. Moulding clay with his hand was his CAD system!

Ok so there are three parts to each handle a bottom, top and a retainer. These I printed on an Objet 30 and the result was great.  The handle should fit nicely over a 25mm dia rubber handle. Put the retainer ring onto  the handle first and position it by holding the top over the handle. Then slide the bottom piece into position around the handle. The top is now ready to go on this again is slid in then the end will need to be squeezed to get the snap fit to grab. (if using Objet printer or equivalent always warm the snapfit in hot water to avoid breaking the snapfit!!!) You should now have your alternative ergonomic handle ready to go!