Here's a brief overview of the Double Leg Takedown, an MMA and Wrestling classic. The name 'double leg' refers to the grip on both of your opponent's legs. The double leg 'tackle' is simple and effect, and at a higher level can be chained into multiple takedown combinations.

If we compare it's use in MMA & BJJ, it's important to consider your opponents guard / grip height and make the necessary adjustments to get under the arms and in on the legs.