Boise ice bath studio offers founding member perks before July opening

Tree City Plunge & Sauna tried to turn curiosity into commitment before its July opening, rolling out a Founding Member promotion for Treasure Valley residents who want first crack at Boise’s newest cold plunge and infrared sauna spot. The pitch goes well beyond early entry: founding supporters can lock in membership rates, get priority scheduling, collect guest pass incentives, attend special recovery workshops and receive recognition as original founding members.

The promotion is aimed at people who already know they want cold exposure and sauna time to become part of their routine. Tree City says its model is built around cold plunge therapy, infrared sauna sessions and contrast therapy experiences, not one-off novelty visits. That makes the early membership offer especially practical for regular users who want a set place to recover, reset and build the habit without improvising tubs, ice runs or backyard workarounds.

Tree City’s website describes the business as Boise’s first dedicated contrast therapy center and places it at 754 N Benjamin Ln in Boise. The co-owners listed are Evan Reely and Nathan Sales. Its public pricing also shows how the studio is trying to widen access once the doors open: a $49 day or guest pass, a $99 membership for three visits per month, a $249 membership for two visits per week and an unlimited plan at $279. Add-ons include aromatherapy and electrolyte drinks.

The rollout itself is being staged. Tree City said it would officially open on July 1, with a soft opening expected about a week earlier. That earlier window was tied to tours, premium booking opportunities, wellness events and grand-opening invitations for founding members and early supporters, a familiar move in the recovery space where first users often become the loudest advocates.

For Boise’s cold plunge crowd, the bigger question is not whether another sauna exists. It is whether Tree City changes the habit from something people dabble in to something they schedule. Cold Cowboy Club, PLUNJ Boise and SISU Sauna & Cold Plunge already signal a growing local market, but Tree City is leaning hard into community identity, not just equipment. The membership model gives the opening a club feel, and that may be the difference between a new venue and a new ritual.