Our assessment
This is a manufacturer-document review, not a use test or a lab measurement. We checked the 27oz single-wall Reflect with its Bamboo Cap, not the insulated Reflect models.
It answers one narrow question well: what touches the drink. The manufacturer describes a bottle with no paint, ink or coating, and a cap that is one piece of steel on the inside, sealed by a food-grade silicone ring. No study we found has measured particle release from this bottle or its cap, so we do not claim it lowers microplastics exposure.
Skip it if you want hot drinks, insulation or carbonation. A bottle you already own that does the job is a perfectly good reason to buy nothing.