Stay hydrated all day with the IRON °FLASK 40 oz Wide Mouth Straw Water Bottle, featuring double‑wall stainless steel insulation that keeps drinks cold for up to 24 hours and hot for 12. This BPA‑free bottle includes three leakproof lids and a durable powder‑coated Midnight Black finish for reliable, stylish everyday use. Upgrade your hydration routine today click to discover why this bottle is a top‑rated outdoor essential.
The IRON °FLASK 40 oz Wide Mouth Straw Water Bottle is a premium insulated stainless steel flask designed to keep you hydrated on the go, whether you are camping, hiking, training at the gym, or commuting to work. Its double-wall vacuum insulation keeps drinks cold for up to 24 hours and hot for up to 12 hours, ensuring refreshing water or warm beverages all day long. Made from durable 18/8 stainless steel, this BPA‑free, non‑toxic bottle won’t rust or retain flavors, making it ideal for daily use and outdoor adventures.
This model includes three leakproof lids—carabiner straw lid with two straws, flip lid, and stainless steel lid so you can customize how you drink and easily prevent spills in your bag. The 40 oz wide mouth design in Midnight Black offers generous capacity while still being easy to fill with ice and clean by hand as recommended in the care instructions. With a powder‑coated exterior for a secure grip and a sleek, modern look, the Iron Flask is both stylish and functional for sports, travel, and everyday hydration.
Backed by thousands of positive customer reviews and a 4.7 out of 5 stars rating, this top‑ranked bottle is a best seller in Camping & Hiking Hydration Flasks, giving buyers confidence in its performance and reliability. Its lightweight 0.98 lb construction, adult‑friendly size (3.5″ W x 10.4″ H), and versatile accessories make it a smart upgrade from disposable plastic bottles. Whether you’re packing it for a full day on the trail or keeping it at your desk, the IRON °FLASK delivers long‑lasting temperature control and leakproof convenience.
About this item
- INSULATED SPORTS WATER BOTTLE: Goodbye sweat! The double wall insulation makes the Iron Flask sweat-free! It keeps your drink COLD for up to 24 hours, and HOT for up to 12 hours. *NOTE: ONLY the 14 Oz, 18 Oz, & 22 Oz fit in cupholders*
- 3 LIDS: YES, Iron Flask comes with THREE different leakproof lids. Carabiner Straw Lid with 2 Straws, Flip Lid, and a Stainless Steel Lid! *NOTE: The stainless steel lid is plastic from inside and stainless steel from outside*
- 18/8 PREMIUM STAINLESS STEEL: The Iron Flask is made of 18/8 Stainless steel that is BPA free and non-toxic. It will never leave a metal taste or rust. HAND WASH ONLY WITH SOAPY HOT WATER!
- THE PERFECT GIFT: Stay hydrated during outdoor adventures with our top-rated water bottles, we have everything Mom & Dad need to stay refreshed and energized. Give the gift of thirst-quenching this Mother’s and Father’s Day!
- THE ULTIMATE LIFESTYLE GIFT: Choose a color that speaks to your friends and family to create the perfect, personalized gift! Great for the outdoor or gym enthusiast that will enjoy a memorable product they’ll remember, & due to its durability will stand the test of time.
Customers say
Customers find the water bottle keeps water cold and appreciate its durability, noting it can take a beating and ice lasts up to two days. The product comes with three different lids to choose from, looks nice, and customers consider it well worth the price.
