BJJ with Sophia McDermott. Climbing Arm Bar from Closed Guard, that helps prevent you from getting stacked. Description:

Sophia McDermott shares with you a really tight and effective way to perform a basic arm bar from closed guard. Using your legs to climb up and trap your opponent's shoulder which locks their arm in across their body is super effective. Take a look at these tweaks and changes that makes this arm bar much more effective and prevents you from getting stacked. .

https://www.sophiamcdermott.com/BJJ-with-Sophia