Sungmin was spotted wearing a pair of leather gloves from KTZ for Break Down music video. The glove's price is $229.12 and it's still available on farfetch.com
The gloves has a heart shaped details on it and made from 100% leather. Here's the buy link for that gloves. The gloves which I gave the link for you is for women, meanwhile the one which Sungmin wearing is fingerless and I think it's from the Men collection, but I couldn't find the buy link for the one he's wearing.