8 ozs or 10 ozs on the bag and pads. You can tell if you're punching wrong really quick. Your hands shouldn't hurt if you're punching correctly, and your wrist and knuckles are aligned.

16oz for sparring. Don't mess em up on bags.

Thai bag gloves are usually thumbless. https://www.amazon.com/Fairtex-Muay-Thai-Gloves-Color/dp/B00TU4PV2E/ref=pd_sbs_200_2?_encoding=UTF8&refRID=01G00Q0ANZ6T4GGVB302