Yes, SPIbelt is a legitimate product. It's a running belt that is highly recommended for daily runs. The SPIbelt Large Pocket is particularly praised for its ability to hold essentials like a large phone, cards, and keys. The adjustable band can be tightened snugly to prevent bouncing during runs. However, it's worth noting that some users have reported that the belt tends to bounce when loaded with heavier items and may ride up depending on body type. The pocket's synthetic fabric is good at wicking sweat, but it isn't water-resistant, so contents can get a bit soggy. Despite these minor issues, SPIbelt remains a popular choice among runners for its convenience and affordability.