These envelopes have straight flaps and reliable gum closures to keep the items placed inside of them secure as they travel through the mail

" "Go big or go home

Pour vos documents qui ne peuvent ou ne doivent pas être pliés

Each one measures 4 1/2 x 10 3/8 inches in size and has a rounded flap opening with a reliable gum closure

eBook: Mark Twain 404094-EB Strengthening Physical Science Skills for Middle & Upper Grade - Grade 6 - 12 braces_splints_slings_334147 These envelopes have straight flapsDevelop interest and confidence in advanced science by building science vocabulary and math skills while exploring physical science concepts! In Strengthening Physical Science Skills, topics include matter, gravity, density, motion, simple machines, electricity, light, and more.