This number is effective in getting in touch with someone at Adidas, even if the menu is a little bit confusing. When calling, you're presented with several oddly specific choices before you're able to get to general questions.
Initially, you're asked to press 3 if you're calling about Adidas' most recent release. If you're not, you're taken to the main menu, where you can request help with an order, identify yourself as an Adidas employee or ask a question. Alternatively, if you go through those options without a selection, there is a choice to ask for Spanish.
If you do make a selection, you're asked if you have a question about a few specific products before getting to where you can ask any sort of question. Before getting to that choice, I was offered questions about Adidas' period proof line, its ready to be remade line and fitting for a sports bra. Checking this number revealed that this is the standard number for Adidas in general, as opposed to a number for their women's department.
Once I was past these selections, I was able to choose general questions and was connected with a representative, who asked for my name and how she could help. I identified myself and asked how long I would have to return an item if I ordered from adidas.com and it didn't fit properly. She said that the return window was 30 days from the date of delivery confirmation at my home address. I asked if that was 30 calendar days or business days, and she confirmed that was calendar days. She then asked if there was anything else, and I said there was not and hung up.
Based on this, I would definitely use this number again. The extensive and specific menu is odd, but the service is good and gets questions answered with ease.