Summer can get HOT, we can experience temperatures in the high 30s during peak season so sun protection is very important. Make sure you apply sunscreen before your tour. You'll be wearing a helmet so you don't need a hat but you can bring sunglasses. If you plan on wearing sunglasses make sure they fit securely on your face by doing a gentle head shake test - if they fall off during this they'll likely fall off while ziplining, if they stay on then you are good to go! However, if you are taking on the Sasquatch Zipline, you'll want to make sure you have a strap for those sunnies as the speeds are much higher than on our other ziplines.
As for clothing, you'll want to wear items you're comfortable being active in, you will be doing some light hiking between ziplines. We recommend staying away from any kind of skirt because the harness you'll be wearing has individual leg loops and has to be worn over top of clothes.
Footwear MUST be closed toed. Not only are you likely to lose sandals while ziplining but it is also a safety requirement. We recommend wearing a light hiking shoe or runner.
(While summer in Whistler is mostly sunny we do receive a few days of rain as well, so check out our What to Wear Ziplining in Spring post if you're dressing for a rainy day)