The reviewer, Hannah, tried the WILL Cool Menthol & Camphor Cooling Pain Relief Roll-on – 3oz by WILL PERFORM, co-founded by Serena Williams. Hannah found the roll-on to be effective in providing fast-acting pain relief for various areas of the body, including shoulders, neck, knees, legs, feet, back, elbows, and wrists. She mentioned receiving a cute sticker along with the product, which added a nice touch. Hannah applied the roll-on to her knee and instantly felt relief. Even after an hour, she could still feel the cooling effect, which helped alleviate her discomfort. She highly recommended the product for athletes or anyone experiencing joint or muscle pain. Overall, the WILL Cool Menthol & Camphor Cooling Pain Relief Roll-on impressed Hannah with its ability to keep the area cool and provide effective relief.