Kyle Stumpenhorst - RR BuildingsISOtunes Hearing Protection Brand Ambassador Kyle Stumpenhorst

Kyle Stumpenhorst - Exclusive Offer

20% off Select models

  1. Add one of the models below to your cart
  2. Apply code RRB20 at checkout
Kyle Stumpenhorst Influencer


  1. Offer ends June 16 at 11:59 p.m. EST
  2. Only eligible at and
  3. Code RRB20 is only valid for the following models: PRO 2.0, PRO Aware, FREE Aware, FREE 2.0. Cannot be combined with other discounts.
  4. Must enter code RRB20 at checkout to redeem offer.
  5. Discount only valid on orders with (1) pair of ISOtunes hearing protection in cart. For orders with 2+ products, the code BOGO50 will be auto-applied.


All domestic orders