Another simple stretchlet made for my 2-year-old.Printed on an Ultimaker 2 in Taulman 645 nylon using 245C head temperature and 3M blue painter's tape on a cold bed. Layer thickness 0.1mm. Simple stretchlet has lots of large radii so it can stretch out quite big while keeping the material stress low. Originally designed for my 2-year-old daughter but when I printed it in nylon it is a touch on the large side (she pushes it up on her forearm a bit). I expect if it were printed in PLA it would stay more tight on her wrist. I haven't tried printing the twisted one (includes a 10-degree twist).