Size: Small- 35x16cm (13.8x6.3inch), Large- 39x16cm (15.3x6.3inch) Natural Wood: Durable, water-absorbent and resistant, clear texture with minimal wood knots, excellent insulation without rough edges, smooth finish and no leaks. Function: Provides complete moisture, boosts metabolism, enhances beauty, alleviates fatigue, improves sleep, insulates heat, and is eco-friendly. Precautions: Prior to first use, soak the wooden barrel in water for 24 hours to restore normal moisture levels. Avoid prolonged exposure to sunlight or strong winds. Customer Service: Committed to providing a positive shopping experience. For any product inquiries, please contact us via email for prompt assistance.