Costco’s “While Supplies Last” section is a hidden goldmine for budget-savvy shoppers looking to score seasonal items at unbeatable prices. From stylish kidwear to patio upgrades, these seven non-food products are worth adding to your cart before they disappear. Here’s our countdown of Costco’s top limited-time summer essentials.
7. KHQ Kids’ Playwear Set $9.97
This multi-piece clothing set includes two shirts, a pair of shorts, and long pants—all designed for comfort and playful summer days.
Why It Deserves This Rank
It’s one of the most affordable ways to grab a complete outfit (x2!) for kids. With cute prints and flexible sizing, it’s an easy yes for parents.
Key Features
- Four-piece clothing set
- Fun, kid-friendly graphics
- Relaxed fit for active play
Materials
100% Cotton (varies by style)
Use Instructions
- Machine wash cold
- Tumble dry low
- Do not bleach
6. Habitual Youth Dress $9.97
Choose from three pretty styles: pink with tiered ruffles, yellow eyelet, or blue with bows—perfect for summer parties and park days.
Why It Deserves This Rank
At under $10, this dress combines comfort and charm. It’s fashion-forward for kids without the boutique price tag.
Key Features
- Lightweight summer dress
- Sleeveless and breathable
- Easy pullover design
Materials
Cotton blend fabrics
Use Instructions
- Machine washable
- Gentle cycle recommended
- Line dry or tumble dry low
5. Flapdoodles Kids’ Swim Set $9.97
Includes a vibrant swimsuit and a hooded cover-up dress, available in three playful styles (flamingo, ice cream, ruffle blue).
Why It Deserves This Rank
This two-piece swim set is pool- and beach-ready for under $10—almost unheard of at this quality level.
Key Features
- Two-piece set (swimsuit + cover-up)
- UV-friendly fabrics
- Available in sizes 2T–5
Materials
- 82% Nylon, 18% Spandex (swimsuit)
- Cotton/Polyester (cover-up)
Use Instructions
- Hand wash swimsuit
- Machine wash cover-up
- Air dry both pieces
4. Mondetta Women’s Ribbed Bike Shorts $7.97
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Comfort meets performance with these ribbed biker shorts, designed with a drawcord waistband and side pocket.
Why It Deserves This Rank
For under $8, they’re a must-have for workouts or lounging, offering quality fit and durability.
Key Features
- High-rise ribbed texture
- Adjustable waistband
- Side pocket for phone or keys
Materials
75% Nylon, 25% Spandex
Use Instructions
- Machine wash cold
- Do not bleach
- Tumble dry low or hang dry
3. Fortessa Jupiter Tumblers (8-Pack) $19.97
These stylish bubble-glass tumblers are perfect for summer hosting, and come in a set of eight.
Why It Deserves This Rank
A single tumbler costs $12 elsewhere—this Costco set gives you eight for less than $20.
Key Features
- Classic vintage bubble design
- Set of 8 glasses
- Durable and dishwasher-safe
Materials
Pressed glass
Use Instructions
- Dishwasher safe
- Avoid extreme temperature changes
2. Fountain of Waters Tomato Garden Hand Care Set $29.97
Includes a hand wash and hand serum cream made with soothing tomato extract and natural botanicals.
Why It Deserves This Rank
Valued at $70 on the brand’s website, you save $40 buying this indulgent self-care duo at Costco.
Key Features
- Includes 1 hand wash + 1 serum cream
- Refreshing tomato garden scent
- Elegant packaging for gifting
Use Instructions
- Dispense 1–2 pumps of hand wash into wet hands, lather, and rinse
- Apply serum cream to clean hands as needed
1. Sunvilla 10′ Solar LED Market Umbrella $174.99
A summer patio essential, this 10-foot umbrella features solar-powered LED lighting, a rechargeable battery, and a weather-resistant canopy.
Why It Deserves This Rank
It’s both stylish and functional—with removable components for easy replacement. One of the highest-rated patio buys in the warehouse.
Key Features
- Solar-powered LED lights (3 brightness levels)
- Rechargeable lithium-ion battery
- All-weather, fade-resistant canopy
Materials
- Solution-dyed polyester fabric
- Aluminum frame
- LED lighting components
Use Instructions
- Spot clean canopy
- Store indoors during extreme weather
- Recharge battery using solar panel or wall outlet
- Umbrella base sold separately
Final Word
From patio upgrades to kids’ essentials, these Costco summer buys combine value, style, and practicality. Check your local warehouse or shop online before they vanish—because when they’re gone, they’re gone.
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