40% OFF all plus free shipping and returns. Slumber is offering the deal of a lifetime this December for any new subscriber – 40% off every new subscription and recurring order FOR LIFE! That’s a better deal than Black Friday! Normally $60 for a single purchase, Slumber’s gummies for sleep are available for $36 in this promotion. Customers will save $350/year by joining the subscriber program AND they’ll earn loyalty points towards future purchases.