What is the GSM for your labels? We mainly use White gloss for laser labels, 8.5x11 for all jobs.

Thanks for your inquiry. The data sheet for our white gloss laser product lists a basis weight of 57# and a basic size of 25” x 38”. The data sheet does not list a gsm value, but I was able to locate a calculator online that uses the provided values to calculate the gsm of the material: http://www.casepaper.com/resources/calculators/grammage/ Based on the specifications from the data sheet the white gloss laser material is 84 gsm.

Can I write in these labels with a pen? I want to use them as price tags.

The Brown Kraft (BK) labels is an uncoated paper-based label that works great with permanent markers, pencils (traditional and mechanical), highlighters, markers, crayons, colored pencils, and pens (ballpoint, felt-tip, and gel).

Do these labels stay on glass bottles while in and out of the fridge with condensate forming on them?

The Removable White Matte (WR) is an uncoated paper material with a low-tack adhesive, intended for temporary applications. If you are going to expose your bottles to moisture, we recommend one of our weatherproof materials at the link below. https://www.onlinelabels.com/materials/weatherproof-labels