Iron Flask 40oz Insulated Water Bottle with Straw Lid — Dark Night

The Iron Flask 40 oz is a double-wall vacuum-insulated stainless steel water bottle designed for everyday hydration and outdoor use. It features a wide mouth opening for easy filling and cleaning, comes with a straw lid (plus two additional lids for versatility), and is built from durable 18/8 stainless steel.

Key features:

• Double-wall vacuum insulation keeps drinks cold for 24+ hours or hot for 12+ hours
• Leak-proof seal (when properly assembled)
• Dishwasher-safe main bottle; hand-wash lids recommended
• Lightweight and portable at ~1 lb
• BPA-free
• Available in multiple colors and sizes

Who it's for: Budget-conscious buyers seeking solid insulation and a multi-lid system without premium pricing. The straw lid appeals to gym-goers and commuters; the wide mouth suits those who prioritize cleaning ease and ice compatibility.