Thank you for viewing. This is a wheat chain surgical stainless steel (304) necklace. The pendant is designed with a whale tail motif, said to be a symbol of good luck. It's a type that you can put on over your head without removing the clasp, and you can adjust the length after putting it on. It's also stress-free to put on and take off. Surgical stainless steel, such as 316L, 304, and 202, is a low-allergy material and is used in medical tools such as scalpels and scissors, as well as luxury watches. It is a special stainless steel with excellent properties, such as being rust-resistant and resistant to corrosion, oxidation, and heat. Size: Maximum approx. 70cm Chain width: 2.5mm Whale tail: 30mm x 23mm Material: Surgical stainless steel (304) Color: Silver Please feel free to ask any questions.