Puffy eyelids make eyes look swollen and tired, and depending on the severity of the problem, they can make it difficult to open or close oneâs eyes completely. There are many causes for puffy eyelids; some are avoidable, while others are not.
This new rate would be $0.48, one cent below the Post Office or retail rate of $0.49 for First-Class 1 oz. Letters.â¢ First-Class Mail Flats/Large Envelopes (1 oz.) rates will increase six cents from $0.92 to $0.98.
The most that a letter can weigh and still be shipped using the United States Postal Service's First-Class service is 3.5 ounces. Letters weighing more may be subject to additional postage charges. Letters that do not bend, have clasps or are lumpy may also incur a nonmachinable surcharge.