Review on 10 Pack of USB Flash Drives - 4GB Capacity, Swivel Design with LED Indicator - Ideal for Data Storage, File Sharing, and Easy Color Coding (Multi-Color, USB 2.0) by Will Porter

These are far from the best and fastest flash drives. If you're using them for a simple document and images/videos that aren't too large in file size, they're probably good enough for that. The writing speed is very low, so large files are out of the question for them. I keep them handy to back up macOS and Windows installers and also use them to save work in progress, but I'd like to spend the extra money on a well-known brand.