Number 1 In ServiceMasterson Sta-Wet Premier Acrylic Based Paint Kit, Keeps Wet Paint Fresh for Days, 16 x 12 Inch Artist Palette with Airtight Lid, 30 Acrylic Sheets, Sponge Refill + Tissue Pack

I had a smaller version of this and decided to get a larger one as it did a wonderful job of keeping my acrylic paints moist while in use. The palette also keeps the paints moist in between painting sessions. One word of advice would be to use bottled water or hydrogen peroxide in tap water as there is a tendency for molds to form after a about a week. Nonetheless, this is a great product and a great paint saver. It is worth the investment.

This keeps my acrylic paint ready for weeks at a time.