Looking for 400ml BPA-free Drinking Insulated Glass Water Bottle with Silicone Sleeve

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Hi there, i'd like to learn more about this bottle. In particular : Is this glass or plastic?Can you offer custom colours?Can you offer pad/screen printing on the silicon? Or can we emboss our logo on the silicon permanently?Can we add "windows" to the silicon sleeve or reduce the height of the sleeve so more bottle is seen?Is it borosilicate glass?What's the MOQ for custom silicon colour? We might want multiple colours.What's the lead time for new mold and production?How wide is the drinking hole (internal)?Can you offer samples?We're interested in 1000 units upfront but if it goes well 5000+ monthly. Thank you, Jarahad