This is the summary of consumer reviews for TriggerPoint GRID Foam Roller with Free Online Instructional Videos, Original (13-Inch). The BoolPool rating for this product is Excellent, with 4.70 stars, and the price range is $34 - $39.

The TriggerPoint GRID Foam Roller by Trigger Point Performance offers an easy way to reduce muscle soreness, tension, and other body pains. It's constructed with high quality materials such as a multi-density EVA foam exterior over a durable, hollow core. It's trusted by professionals to help tight muscles, knots, and kinks by rolling it out. It may even help increase circulation, reduce inflammation, and improve range of motion. 

Overall, users were very pleased with their purchase. Many reviewers were athletes or avid exercisers and used this roller as a way of helping their muscles recover after a workout for better results. They found it to be very effective at reducing muscle tension, knots in the body, and soreness. Users were happy with it's durable, high quality design and stated that it looked as good as new even after prolonged use over time. Many people also liked the hollow core and smaller size, making it easy to stow away things inside for travel. 

However, not everyone was happy with the TriggerPoint roller. Some users found it too uncomfortable and hard to use, and were very dissatisfied with this product. One user even stated that it badly irritated their bare skin. Others felt that they size was too small to be effective on certain parts of the body.