Phinus Lock Combo, Total 21PCS Clips Anti-Theft, Locks Anti-Theft for Luggage, Clothing, Backpacks, Boots, Purses, Travel Outdoor Sports(Black, Silver, Gold)

They have to be clear if they are over 6” x 9” which is typically a fanny pack style. Only hydration packs don’t have to be clear. Bag Policy Prohibited items include blankets, towels and sheets. Every year there are posts about people getting their pashminas taken as well. I just make sure my bags have two zippers and use these to deter people. I also get a locker and leave a larger bag of stuff in there all weekend and just carry a smaller bag on me. I also use a phone tether.