Freshlock plus glass storage containers by Pyrex are very nice. I was a little hesitant about using glass storage containers compared to plastic but I am really happy with the glass containers. The containers are made well and fill sturdy. I like the snap lock lids as they make sealing easy. I really like that when I put sauce in the glass container I didn't see any left over coloring from the red sauce that was stored inside  as it washed up very clean and no residual smells either.