This factory-direct 500ml protein shaker is crafted from premium, shatter-resistant PC (Polycarbonate) plastic, ensuring long-lasting durability even with rigorous daily use at the gym. Designed with a highly secure, leak-proof seal, it effortlessly mixes protein powders, pre-workouts, and milkshakes without any messy spills. Beyond its athletic functionality, its sleek profile and smooth exterior make it an outstanding "advertising cup" (promotional item). It provides the perfect blank canvas for custom corporate logos, making it an ideal choice for gym merchandise, business giveaways, and brand promotions.
Product Features:

• 500ml Capacity: The ideal volume for standard fitness supplements and hydration.
  
• Durable PC Material: Constructed from high-quality, shatter-resistant Polycarbonate plastic.
  
• Leak-Proof Seal: Tight-sealing lid ensures safe, spill-free mixing and transport in gym bags.
  
• Efficient Mixing: Engineered to smoothly blend protein powders and nutritional shakes.
  
• Promotional Ready: Perfect as an "advertising cup" with a large printable area for custom LOGOs.
  
• Factory Direct Wholesale: Supports B2B bulk orders and comprehensive OEM/ODM customization.