Absolutely! Every tail made by FinFolk Productions is meant to be used in the water. Before you take your first swim, you will need to purchase a monofin.Signature Finfolk fabric tails do not come with a monofin as there are several monofins on the market that will work with our tails that may tailor to each customers fit preferences. When it comes to monofins, we prefer to give our customers a choice to purchase a variety of third party monofins based on individual preference rather than making our signature tails to fit one single type of monofin. For more information about monofins, continue to the "monofins" section.Finfolk Signature fabric tails are to be used with a monofin by proficient swimmers only. Quality of monofin will affect quality of use. Injury or death may occur with improper use. Always follow common sense swimming practices with use of this product. Do not swim alone, or in bodies of water too deep or too hazardous for your abilities. Always swim in lifeguarded areas. If under the age of 18, always swim with an adult over the age of 18. If over the age of 18, still always swim with an adult over the age of 18.