The mini single chamber pill holder with keychain is Made of high quality and lightweight aluminum alloy, with supremely high polished appearance , sturdy and solid. <br> -Nice for small nitroglycerin, birth control pills, necessary medications, medicine, capsules and a few bills, some small first aid items or small survival supplies that you need to keep dry. <br> -Easy to carry in purse or pocket, lunch pack and hiking/snowboarding pack, and can be clipped easily to keychain, D-ring locking carabiner. <br> -Portable and handy for daily working, travel, outdoor survival emergency condition or some outdoor sports like Hiking, Camping, Hunting, boating, Fishing. <br> -Great product to be reminded to not miss your daily vitamins/medicine, not bulky and easy to carry, sure beats carrying the entire bottle of each medication. <br><br><b>Tips: </b> <br> Please clean the Pill case completely before your first use <br>Check the size before your purchase please <br>There may be a little error of measuring due to manual measurement. <b>TIPS: </b>100% money back if you are not satisfied with our products <br>Any question ,feel free to contact us please ,we are always here for you :)