Key benefits Comfortable, stable support for beginners: Thickened, lightweight EVA construction gives reliable buoyancy and steady support so new swimmers feel secure while learning. Better swimming efficiency: The scientific, streamlined shark-fin shape helps improve body position and reduces wasted movement, making each kick more effective. Versatile, adjustable tool: Two usable modes — switch between open or adapted styles — and an adjustable shoulder strap let you tailor fit and function for different training needs. Fun, kid-friendly design: Cartoon prints and vibrant colors increase engagement for young swimmers while the secure strap preserves comfort and safety. How this product solves common problems Builds confidence in the water by providing secure, balanced support for learners. Improves practice quality by promoting a more streamlined position and more efficient movement. Eliminates fit and usage guesswork with quick adjustment options that suit different users and drills. Keeps sessions enjoyable so children and beginners are more likely to practice consistently. Key features and specifications Material: Thickened, lightweight EVA for durable, comfortable buoyancy and eco-conscious construction. Design: Streamlined shark-fin shape engineered to enhance swimming efficiency and stability. Adjustability: Two-mode use (open or adapted styles) plus an adjustable shoulder strap for a secure, customizable fit. Appearance: Cartoon prints and vibrant color options to increase appeal for younger users. Function: Acts as a training aid to support body alignment and assist propulsion for beginner and recreational swimmers. Compatibility and sizing Designed for beginner and recreational swimmers who need additional support and improved body positioning in the water. Adjustable strap and two usage modes accommodate a range of body shapes and training needs (adjust to achieve the desired fit and support level). Practical use scenarios 1) Swim lessons: Use the shark fin during instructor-led lessons to help learners focus on body alignment and kicking technique while feeling supported and safe. 2) Pool practice and drills: Switch between open and adapted modes to work on different aspects of stroke efficiency and endurance during solo or coached training. 3) Family pool time: Add a fun, secure float aid to keep young swimmers engaged and comfortable while they build confidence and basic water skills. Quick user tips Adjust the shoulder strap for a snug, comfortable fit before entering the water. Choose the open or adapted style depending on the drill: use the adapted style for more support, open style for greater freedom of movement. Inspect the EVA material regularly for wear and rinse after use to keep the product in good condition. This shark fin swimming aid combines proven support, an efficient streamlined design, and adjustable options to make learning and practicing in the water safer, more effective, and more enjoyable.