Amex Offer: Hydroflask $20 back on $60 spend, stackable with 25% refer a friend code

https://www.americanexpress.com/e…ts/offers/
Amex currently has a $20 back on $60 spend offer at hydroflask.com. This is also stackable with the 25% refer a friend promo code if you use a secondary email to refer yourself: https://www.hydroflask.com/refer.
Ideally, you’d want your subtotal to be $80+ to maximize savings. Great for back to school.