Synonyms of Hiccups, Chronic. General Discussion. A hiccup is an involuntary spasmodic contraction of the muscle at the base of the lungs (diaphragm) followed by the rapid closure of the vocal cords. Usually, hiccups last for a few hours or, occasionally, a day or two. However, chronic hiccups are ones that continue for an extended period of time.
Lets answer your question in several parts; The Short Version First: 1: First Class Letter - Max weight is 3.5 oz. 2: First Class Large Envelopes - Max weight is 13 oz. 3: First Class Parcels - Max weight is 13 oz. Long Version: You asked about âFirst Class Mailâ and the weight limits. Mail is defined as âLetters and packages conveyed by the postal systemâ. See Google.
First-Class Mail is a USPS trademark. 1  The minimum size for First-Class Mail is 5 inches long, 3-1/2 inches high and 0.007 inches thick. 2  The maximum size is 11-1/2 inches long, 6-1/8 inches high, and .75 inches thick. 3  The maximum weight for letters is 3.5 ounces.