I've been looking for silicone food storage bags for awhile at a discounted price to use for freezing as I find ziplock bag seals tend to degrade after a few times through the freezer. This brand seems to get pretty good reviews online.
They also have a couple of other sizes at a good discount:
They have a few other colours as well, if you search for Stasher on their site.
Stashers are amazing! They are made from premium platinum silicone, so you can bake, microwave, sous vide, boil and freeze in a Stasher but that’s not all. Stasher bags are ideal for pantry organisation or for bulk shopping. Stasher bags are the perfect travel companion. Ideal for storing your toiletries for easy packing! Be careful with sharp objects though as they may puncture bag. Use soap + water or upper rack of dishwasher. Do not turn the bag inside out, as this can compromise the bag's sealed edges.