Here's more from Elixir:

Elixir® Acoustic 80/20 Bronze Strings with NANOWEB Coating deliver a bright, lively tone together with extended tone life that players have come to expect from Elixir Strings.

• Elixir Strings, the #1 acoustic guitar string*
• Only coated string brand to protect the entire string with an ultra-thin coating, keeping gunk out of the gaps between the windings
• Extended Tone Life – players report their tone lasts longer than any other string, uncoated or coated
• Consistent performance and tone – ready to play whenever you are
• Smooth feel that is easy on your fingers and enhances playability
• Reduced finger squeak – good for both performance and recording
• Anti-Rust Plated Plain Steel Strings resist tone-deadening corrosion, ensuring a longer life for entire set with less hassle and expense of frequent strings changes, spend more time making music