Didn't you post this in the past?
Nose Guard instructions:
The foam pads have adhesives that are removable and reusable for up to 80 times. When removing the foam pads make sure to always peel from the left or right edge of the pads, this will insure longevity of the adhesive. Adjust the foam pads to your desired position to create the perfect fit for your face. Repeat until desired fit is achieved.
How's it look?
Nope. This is a new one. Thanks for noticing!
Really? Is it professional? Is it easy to understand?
I would use 'durability of the adhesive' rather than 'longevity'
I am not a teacher.
Batman, I think you may have mistakenly used the word 'insure' when the correct word to use is 'ensure'. (...this will insure longevity of the adhesive)
Ensure is to do or have what is necessary for success.
Example: These blankets ensure that you’ll be warm enough.
Insure is to cover with an insurance policy.
Example: I will insure my home with additional fire and flood policies.
In American English, what you insure is a business transaction. What you ensure results from your personal efforts.