is it heated? Yes. Does it slow down in this heat? Yes, perhaps. At the same time, this seems to be the norm for SanDisk flash drives lately. I also have Sandisk Ultra Fit and Cruzer Fit Sticks and they all do the same thing. Despite these shortcomings, since I mainly use them for extended storage on my Chromebook, basic backups, and to transfer files between work, home, and my phone, they serve their purpose. I've never had a single crash or data loss that I put on them. The fit and finish of the drive is great and appears to be well made. The cover latches well when the connector end is open and the friction of the slider protects it when not in use.
Sandisk Ultra Flair 128 GB Silver USB Flash Drive: Reliable and High-Speed Storage
65 Review
Compact and Convenient: SanDisk Cruzer Fit USB 32GB Flash Drive (SDCZ33-032G-A11)
66 Review
32GB SanDisk USB Flash Drive (SDCZ430-032G-A46)
78 Review
Samsung BAR Plus 128GB USB 3.1 Flash Drive - 400MB/s - Champagne Silver (MUF-128BE3/AM)
65 Review
2 TB External HDD Western Digital WD Elements Portable (WDBU), USB 3.0, black
84 Review
π Seagate Backup Plus Slim STHN2000400 2TB Portable Hard Drive - Black: Your Reliable External Storage Solution
93 Review
18 TB External HDD Western Digital WD Elements Desktop, USB 3.0, black
95 Review
π Seagate Expansion 3TB Portable USB 3.0 External Hard Drive (STEA3000400) in Black
60 Review