Discuss the wholesale blanks industry: Factory direct, custom labels. You can also use this forum to locate a wide variety of wholesale products including t-shirts, hoodies, mousepads, coffee mugs and other imprintable products.
Printing on wristbands is tricky. Embroidery is what's used the most.
Can't help you on Italian suppliers. Depending on how many you need, you may come out better going to a local sporting goods store and buying them there.
printable wristband 
