Square-Round Handle Insulated Flask
Premium wholesale insulated flask featuring an ergonomic square-round handle, engineered by China’s leading manufacturer for superior thermal performance and modern B2B brand customization.
- INTERCHANGEABLE COLORS
- PENTA-LAYER VACUUM
- BPA-FREE
- 30 Colors In Stock
Fast delivery is possible
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Trusted by 500+ global brands. Inquiry response within 2 hours.
A double-wall vacuum insulated flask with a unique square-round handle design, crafted from food-grade 304 stainless steel to meet global OEM/ODM standards for durability and style.
Architectural Aesthetic | Modern Square-Round Design
A minimalist silhouette defined by a unique square-to-round handle. This precision-engineered geometry offers a premium, high-end look that elevates any professional B2B product portfolio.
Advanced Vacuum Insulation | 24H Cold & 12H Hot
Double-wall 304/316 grade stainless steel with triple-stage vacuum testing. Ensures superior thermal retention for global supply chains that demand high-performance durability.
Ergonomic Handle | Precision Grip & Texture
The signature square-round handle is designed for both aesthetic impact and an effortless, non-slip grip. Features a refined powder-coated finish for a sophisticated, condensation-free experience.
Professional Leakproof Seal | Secure For Commute
Engineered with a 100% spill-proof lid and a reinforced handle structure, making this flask a reliable, travel-ready solution for corporate gifting or retail branding.
Sustainable Manufacturing | OEM/ODM Ready
A BPA-free, eco-friendly hydration solution. Built in our ISO-certified factory to meet FDA/LFGB standards—ideal for brands seeking sustainable, high-quality manufacturing partners.
Inner/Outer Wall | 304 Stainless Steel
Premium 18/8 food-grade. BPA-Free, corrosion-resistant, and FDA/LFGB certified for pure, safe hydration.
Gasket & Sleeve | Food-Grade Silicone
Non-toxic and odorless. REACH & RoHS compliant, ensuring a 100% leak-proof and anti-slip experience.
Lid Material | High-Impact PP
Strictly BPA-Free polypropylene. Engineered for durability and tested under SGS/TUV safety
Logo Printing | Surface Printing | Prototype Drawing Design | Packaging box |
Reliable Global Logistics
We offer flexible shipping solutions, including Sea, Air, and Rail freight (DDP/CIF/FOB), ensuring your bulk orders arrive safely and on time. Partnering with top-tier carriers, we provide real-time tracking and optimized loading to minimize transit costs and prevent deformation of stainless steel products.
Our Quality Commitment
Every Yeway bottle undergoes rigorous QC inspections before dispatch. We stand behind our craftsmanship with a 1-year quality warranty. Should you encounter any manufacturing defects or shipping damages, our dedicated support team will provide a solution—ranging from immediate replacements to credit refunds—within 48 hours.
Your brand’s reputation is our priority. We don't just ship products; we deliver peace of mind.
THE SQUARE-ROUND HANDLE VACUUM INSULATED FLASK
ARCHITECTURAL DESIGN | MODERN SQUARE-ROUND HANDLE
A minimalist silhouette defined by its unique square-to-round handle geometry. This vacuum insulated flask blends structural precision with an ergonomic grip, offering a premium industrial aesthetic for high-end retail collections.
PROVEN BEST-SELLER | OEM/ODM READY
Our top-performing export series, highly praised by global distributors for its high turnover. We provide professional custom logo branding and wholesale solutions to align this trend-setting design with your brand identity.
B2B EXCELLENCE | RELIABLE SUPPLY CHAIN
Crafted from 304 stainless steel for 24H temperature retention. As a leading drinkware manufacturer, we ensure consistent quality and a scalable supply chain, guaranteeing low claim rates for your wholesale business.
VALIDATED BY GLOBAL PARTNERS | B2B MARKET SUCCESS
We don’t just create designs; we deliver commercial success. Based on performance data from over 500 global distributors and retailers who have integrated the Square-Round Handle Series into their professional portfolios.
92%
Of retailers reported a significant increase in storefront foot traffic after featuring the Pebble Cap design.
95%
Of professional buyers rated our trend-leading matte color palette as “Highly Competitive” in their local markets.
98%
Reported zero quality claims, leading to consistent re-order rates and long-term brand loyalty.
PREMIUM ACCESSORIES | STAINLESS STEEL & SILICONE
Elevate your product value with our high-grade accessory set. Includes a food-safe metal straw, a BPA-free silicone straw, and a dedicated cleaning brush. As a professional OEM/ODM manufacturer, we provide custom color matching and bulk supply solutions to meet diverse market demands.
5-LAYER VACUUM TECHNOLOGY
Our advanced insulation system ensures 24H cold and 12H hot retention. Each flask features a 5-layer construction, including a 304 food-grade stainless steel inner liner and an additional copper-coated layer for enhanced temperature stability. Precision engineering for brands that demand excellence.
RELIABLE CRAFTSMANSHIP
Crafted from medical-grade 18/8 stainless steel. Every BPA-free bottle passes strict salt spray and adhesion tests to meet global food-safety standards.
CUSTOM LOGO & OEM
We offer full OEM/ODM services, including laser engraving and custom powder coating, helping you create a unique, trend-leading product line for your brand.
- CERTIFIED SUSTAINABLE
- SUS 316 STAINLESS STEEL
- BPA FREE
- VACUUM INSULATED
- OEM/ODM EXPERT
- 17 YEARS EXPERIENCE
30 IN-STOCK COLORS
Defining the Standard of
Precision Craftsmanship.
Standard Dual-Wall 304 / Optional 316 Customization.
We utilize premium SUS 304 stainless steel for both inner and outer walls. For medical-grade or specialized requirements, we offer full SUS 316 customization to ensure superior corrosion resistance and a lifetime of purity.
Triple-Stage Vacuum Extraction.
Our proprietary V-Shield™ process involves three separate vacuuming cycles during manufacturing. This rigorous triple-stage approach ensures a near-perfect void between steel layers, delivering unmatched 12H Hot / 24H Cold performance.
Laboratory-Verified Durability.
Every coating is engineered to survive. Our finishes pass rigorous industrial protocols, including the Salt Spray Test for corrosion, the Cross-Hatch Adhesion Test for coating strength, and Logo Friction Tests for branding longevity.
YEWAY LAB: Quality as a Promise.
We implement 24-hour temperature monitoring to ensure every product meets industry-leading standards: 12h hot and 24h ice-cold retention.
Strictly compliant with FDA & LFGB standards. We use spectrometers to verify 304/316 stainless steel purity, ensuring zero heavy metal migration.
Proven by Cross-Hatch Adhesion and 48h salt spray tests. Our coatings remain refined, scratch-resistant, and peel-free even in extreme environments.
Detailed lab reports provide powerful quality endorsement for B2B buyers, minimizing after-sales risks and boosting market competitiveness.