Yes, you do. 

Here at Decathlon, we are what is called a "Membership Warehouse", and we use our Membership base to keep up with our Decathlon community and see what our valued customers are interested in. Membership is completely free and to sign up you are only required to give a first name and email.

Apart from that, we offer lots of other benefits; for instance, all your receipts are stored on your Decathlon account, and we provide a 365-day return and exchange policy.