These are an awesome pair of Alpina Elite 100 alpine boots 2016 model. The size is EU 28 or US 10. I can say they are awesome because I rode them for a single day before deciding that they were too small for my feet. The store would not accept them as a return because of the minor wear that I put on them, which you can see in the second and third photo. They have a liner with heating abilities but they require a battery pack which is sold separately. Here's one for sale (https://www.skatepro.com/en-us/324-19098.htm) I got a bigger size that fit snug and they are phenomenally comfortable boots to ride in. I ride park mostly and found that these boots offered stability while throwing tricks and kept my feet warm on cold days, even without the heat capabilities.
Here's the details from the Alpina website.
FLEX INDEX: 100
LINING: InTemp control system
Plastic 4dry liner cuff
Lightweight micro adjustable buckles
Height / volume adjustable spoiler
Heat adjustable foam
Anatomic, air ventialtion footbed
VCP - volume control plate
ADJUSTMENTS Power strap 40 mm
Macro adjustable catchers
MSRP is 550 bought them for 350 looking for $300
If you have any questions please feel free to send me a message. Thanks for looking!