Botanical formula: The scientific ratio of 8 plants extracts, including citronella, lavender, tea tree, mint, eucalyptus, lemongrass, chamomile, and mug wort, is safe to use. Easy to use: Using nano-sustained-release technology, it releases aroma at a constant rate after encountering air, providing lasting for protection for up to 30 days. A wide shield can be form around it. Stay away from harassment. Rotatable top design: You can for play like top while diffusing the essential oils of mosquito repellent plants, providing a space free from mosquitoes. Waterproof and sweatproof: It is waterproof and can also be worn when playing in water, allowing children to for play and avoid mosquito bites. Detachable: The protective windmill can be removed separately and fastened to the neckline, school bag, stroller, etc. Specifications: Material: ABS + Silicone + PVC