Self Stirring Coffee Mug Cup Kitchenware

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ECONOMIC – preservation storage bags , durable and reusable , save money , provide you healthy life style. Only pure silicone is safe , healthy , eco-friendly , non-allergenic , non-reactive , hygienic , not toxic to environment , recyclable , possess long lifespan up to 30 years.FOOD GRADE MATERIAL – This reusable silicone food storage bag made of food grade silicon , approved by FDA & SGS , no fillers , coating , BPA , BPS , BPF , PVC , Phthalates or any the chemicals which can be dangerous to your health after they migrate into the food.LEAKPROOF – Designed with Airtight seal , Leakproof vacuum and zip-locked container that can store all kinds of solids and liquids without spilling. Hermetic seal to store liquids or solids. (NOTE: When you start to use it for first several times , the lock for the bag may a little tight seal ,that’s for a special purpose to make the best effect of preservation.)MULTIFUNCTIONAL – Excellent heat and cold resistant , temperature resistant range: -50??+250? , can be boiled and used in microwave oven , refrigerator , toaster , freezer , dishwasher safe , available in kitchen and outdoors for carrying.In the beginning , it might be a little hard to open, but they will be loosen up a bit over time. Some customers also suggest to use a brush and put coconut oil in the slider to make it easier to open and close.