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Mainstays 18 oz Clear Plastic Water Bottle with Stainless Steel Screw Top Lid and Strap

Mainstays 18 oz Clear Plastic Water Bottle with Stainless Steel Screw Top Lid and Strap

4.5· 1,414 ratings

Best price now

$1.00at WalmartObserved at 3:22 AM

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Our take on the Mainstays 18 oz Clear Plastic Water Bottle with Stainless Steel Screw Top Lid and Strap

The Mainstays 18 oz Clear Plastic Water Bottle is a basic, low-cost bottle for everyday hydration. The clear body shows how much water is left, the wide mouth makes filling and cleaning easy, and the stainless steel screw-top lid has an attached strap for carrying. At $1.00 at Walmart as of November 4, 2026, it sits at the bottom of its recent price range, so there is little reason to wait for a lower price.

Best forShoppers who want a spare bottle for very little moneyKids and students carrying water to schoolDesk and gym-bag use where a lightweight bottle helpsBuying several bottles for a household or event
Pros
  • Very cheap at $1.00
  • Clear body makes water level easy to see
  • Wide mouth is simple to fill and rinse
  • Stainless steel screw lid with attached carry strap
  • Lightweight and fits most cup holders
Cons
  • Plastic body, not insulated, so drinks warm up
  • 18 oz is small for long outings or workouts
  • No flip or straw top; you unscrew the lid to drink
  • Thin plastic can crack if dropped

Mainstays 18 oz Clear Plastic Water Bottle with Stainless Steel Screw Top Lid and Strap prices at every store

  • WalmartNew

    In stock

    $1.00+ $6.99 shippingObserved at 3:22 AM
    Visit store
  • eBayPre-owned

    Availability unknown

    $1.99Observed at 3:22 AM
    Visit store
  • PoshmarkPre-owned

    Availability unknown

    $4.00+ $6.49 shippingObserved at 3:22 AM
    Visit store

Also available at

  • WalmartCheck price at Walmart

Mainstays 18 oz Clear Plastic Water Bottle with Stainless Steel Screw Top Lid and Strap price history

Lowest price we've seen: $1.00 on Nov 4 at Walmart. Tracked across 1 store since Nov 4.

What reviewers say

With 4.5 out of 5 from 1,414 ratings, owners mostly treat this as a cheap, handy everyday bottle. Praise centers on the low price, the clear body and the secure lid; complaints tend to be about the small size and plastic build.

Pros
  • Low price for a usable bottle
  • Clear body shows water level
  • Lid seals well and the strap helps
  • Easy to fill and clean
Cons
  • Small 18 oz capacity
  • Not insulated; water gets warm
  • Plastic feels thin
  • Screw lid is slower than a flip top

About the Mainstays 18 oz Clear Plastic Water Bottle with Stainless Steel Screw Top Lid and Strap

This Mainstays water bottle gives you a simple way to stay hydrated at home, at school, or on the go. The 18 oz size is easy to carry, and the clear body lets you quickly check your water level throughout the day. It is made with BPA-free plastic and features a stainless steel screw top lid for a secure close. The wide mouth opening makes filling the bottle easier, while the attached strap gives you a convenient way to carry it from place to place. Its straight body fits a clean, simple look for everyday use, and the lightweight design helps make it easy to bring along in a bag, backpack, or cup holder. Includes 1 bottle.

Specifications

color
ClearSource
actual_color
Transparent clearSource
multipack_quantity
1Source
Material
Stainless Steel
Pattern
Sports
Volume

Questions and answers

Is the Mainstays 18 oz water bottle worth it?
At $1.00 at Walmart as of November 4, 2026, it is a low-risk buy as a spare or kids' bottle. Do not expect insulation or a rugged build at this price.
Is the bottle insulated?
No. The body is clear plastic, so it does not keep drinks cold the way a stainless steel vacuum bottle does.
Does it fit in a car cup holder?
The straight 18 oz body is slim and lightweight, so it fits most standard cup holders. Check your holder's width if it is unusually narrow.
Is the lid leakproof?
The stainless steel screw top is described as a secure close, and owners generally report it seals well. It is not a flip or straw lid, so you unscrew it to drink.
Is the plastic BPA-free?
Yes. Mainstays says the clear body is made with BPA-free plastic.
What is in the box?
One 18 oz clear bottle with its stainless steel screw-top lid and attached strap. No extra lids or brushes are included.
Where is the Mainstays 18 oz Clear Plastic Water Bottle with Stainless Steel Screw Top Lid and Strap cheapest?
At Walmart, for $1.00, as of our latest check.
What do buyers say about the Mainstays 18 oz Clear Plastic Water Bottle with Stainless Steel Screw Top Lid and Strap?
Rated 4.5 out of 5 from 1,414 ratings.
Where can I buy the Mainstays 18 oz Clear Plastic Water Bottle with Stainless Steel Screw Top Lid and Strap?
3 stores we checked sell it, including Walmart, eBay, Poshmark.

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18 ounce
Capacity
18 fl oz