Decathlon

Decathlon is a French sporting goods retailer with some 850 stores in 22 countries. The store in La Zenia (Orihuela Costa), Spain is huge and it offers a very wide range of sports clothing and equipment.
The retailer owns and manages some 20 (!) brands of its own: Kalenji (running), Inesis (golf), Quechua (outdoors and camping) etc. Although they are all «store brands» you trust them a bit more as they are focused on different types of sports. They don’t try to sell you dance leggings and fishing rods under the same brand name :)
In most cases their own brands are in the inexpensive range with fair quality. In the upper price range Decathlon stocks well known brands like Nike, Adidas, Asics etc. If you are not really into a particular kind of sport — say you want to try fishing and you’re not sure if you will like it — then Decathlon’s store brands are a great way to start. Then, when (and if) you are able to tell the difference — you may want to switch to other brands. I guess this is their strategy and it serves them really well — their stores are very popular everywhere they open.
I liked their golf section. They stock golf clubs, bags, balls, clothing, shoes, gloves, grips you name it! You can trade in your old clubs for new ones here. Golf shoes prices start from some 25 euros, there’s a wide choice, both with spikes and without spikes. From Inesis to Adidas and Ecco. It rarely rains in this area but they carry rubber boots with golf spikes! :) Buying shoes online can be tricky (you better try shoes :)) and Decathlon is a great solution.
If you want to make a personalized gift to someone (or to yourself) — you can have your name/​logo printed or engraved on a product from Decathlon in their customization workshop. The also repair stuff here — they will change your bike’s tires for example.
There’s a loyalty program — you can register online or in store. They say you can «try products» in store having a card — does that mean you can play table tennis for as long as you want? Or did they refer to a golf simulator? Anyway, I signed up!
There’s only one reason why I try to avoid frequent visits — I can spend hours there every time I go :-)