Fingerless grips are designed for fast transitions. They also wrap the bar differently, therefore they do offer more grip than standard grips if worn correctly. These types of grips have become popular with CrossFit athletes and workouts where speed through transitions is key. 

BumbleBee X Fingerless grips are the most popular choice with straight cut shape 

Series 2 BumbleBee X Fingerless come with more ergonomic shape to help keep the thumb dexterity and freedom of movement. 

Venom X Fingerless are slightly shorter but perfect for ring work especially as they offer false grip guard as well.