This combination lock is easy for young children to use. Instead of numbers, you can create a code using symbols. This is easier for young children to remember. This is therefore the perfect lock to teach your child to safely put away their bike from an early age.ABUS Security Level 34 mm thick (hardened steel) square chain with a textile sleeve to prevent scratchesPlayful, easy to use for children due to symbols instead of numbersIndividually adjustable codeGood security for low theft riskRecommended for securing cheaper bicycles and children's bicyclesAbus Item number: 720940 EAN code: 4003318874987 Retail packaging: Yes