Ideal for Large Lenses – This cleaner is perfect for larger lenses such as telescopes or spotting scopes and is portable and compact enough to fit in your pocket or any bag. A perfect addition to any telescope, or hunting, stargazing, or camera accessories, keeping your optics clean & protected for years to come. Reusable & Portable – The Carson Reusable Lens Cleaner is a must-have lens cleaning tool for anyone needing access to crystal clear vision & lens protection on the go. A lightweight & compact design lets you bring this cleaning tool anywhere for multiple uses. Effective & Long-Lasting Results – A Dry Nano Particle Cleaning Formula provides clarity & protection from dust, fingerprints & smudges without damaging the lens. The retractable brush ensures this lens cleaner will remain clean & always be ready. Safe to Use– The Dry Nano Particle Cleaning Formula & retractable nylon brush are safe & easy to use on all lens types & will not damage your lens coatings such as an anti-reflective coating. The Cleaning solution is alcohol free & ammonia free. Not for Eyeglass Use – Not recommended for use on eyeglasses. For glasses, we recommend our Stuff It™ Microfiber Cleaning Cloth. Available in 3 sizes: SN-80, SN-40, SN-10.