I need to order some gloves and don't know what size to get.

Measuring my hand I have a 8 1/4"

Does anyone have an 8-8 3/8" hand that can tell me what size(sparco) they are using?

Glove Sizing Guide:

SMALL
7.5-8.5

MEDIUM
8.5-9.5

Looks like I am a small but worried it's going to be too tight.