This is a custom order. Made with a focus on material quality, Neck weight 1.0kg (2.20lbs) Emphasis on material quality! Made in Japan! A brand new product with a great look. Keep a stable horizontal position during pool practice! Also good for headfirst entries from jackknifes. Dolphins will be surprised by your rocket dives in the ocean! Recommended for those who are not good at making things themselves or have never used one before. ★ Rubber tube: Made in Japan, pinhole inspected ★ Buckle: Streamlined and highly operable, made by Nifco, a Japanese manufacturer used in a wide range of fields such as outdoor and sports ★ Lead: Extremely small spheres, 1000g (2.20lbs), made in Japan ★ Tube thickness: Approximately 22mm ★ Tube inner diameter: Approximately 420mm ★★ Total weight: Approximately 1050g ±10g Improve your skills with this neck weight, carefully crafted by a former product designer based on experience in freediving and dolphin swimming. A portion of the sales will be donated to WWF Japan for the ocean. ＜Precautions for use＞ ・Please handle with care as it is a rubber product. ・After use, rinse with water and lightly wipe off the moisture. 　Close the buckle and place it on a flat surface. 　Dry naturally, avoiding direct sunlight. 　The same applies after use in the ocean. ・When carrying, put it in a plastic bag, etc. ・Before use, check for any damage. #freediving #divingequipment #neckweight #diving #skin diving #longfins #neckweight #weight #snorkeling #skindiving #freediver