Kettler Kettrike® Premium Tricycles Full-featured Trikes by Kettler®. Perfect for toddlers and pre-schoolers 2-5 years. Kettrike® tricycles are made in Germany and includes a Lifetime Frame warranty. For increased versatility Trikes convert to strollers so pre-toddlers can get in on the fun. Value, convenience, safety for parents - all the fun & play options a toddler could wish for!