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In keeping with their reputation for innovation and leading edge technology, K2 Sports has partnered with Outside Labs Inc., to answer the numerous calls from medical professionals concerned with the ever growing occurrence of skin cancer among outdoor athletes. K2 will feature three high performance products: the K2 Endurance Sunblock lotion in both SPF 30 and SPF 50, and the K2 Endurance Lip Balm SPF 30.
Athlete tested in conditions ranging from high altitude winter sleet to scorching dry desert conditions, the K2 Endurance Suncare Products formulated by Dr. Martens resolve fundamental performance issues specific to outdoor sports. Utilizing the most advanced polymer technology and a proprietary blending of four FDA approved sunscreens, the K2 Sunblock bonds to the skin creating a longer lasting UVA + UVB barrier that delivers the best sweat proofing and waterproofing currently available. The invisible, non-greasy bonding formula simultaneously allows the skin to breath while preventing the product from running and causing eye irritation. Added moisturizers combat dry skin caused by exposure to sun, wind, and low-humidity mountain air. Antioxidants provide an extra level of cellular skin fortification. As an added safeguard for the sensitive skin of the lips, K2’s Endurance Lip Balm also includes Vitamin E and Aloe for deep moisturizing.

K2 Endurance SPF 30 sunblock provides advanced UVA and UVB protection.
| Capacity/Volume: | 4 fluid ounces |
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| SPF: | 30 |
| Suggested use: | Sunblock |
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View other products from K2 classified in Hiking & Camping > Sun Protection. View all products from K2.
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Sometimes, we can't be sure that the product is the same across the stores that offer its, so you may find the same product listed more then once on GearBuyer.com, we these list highly similar products below.
| K2 Endurance Sunblock SPF 50 - 4 oz. | $13.00 | |
| K2 Endurance Sunblock SPF 50 - 1.5 oz. | $7.00 |
This product is available in the following colors:
Click any color to show the product in that color
| Black |
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Best sunscreen I've tried yet! | |
| Rating: | ![]() |
| This stuff really works - I often am doubtful when I read marketing from manufacturers, but with this Endurance Sunscreen, the hype turns out to be true. At least as far as I have been able to determine. I tried a test while climbing in the full sun around 8,000 feet a few weeks ago, applying the 30 SPF sunscreen to my neck, face and one arm in the morning and deliberately did not reapply all day. Worked like a charm! The areas where I used the sunscreen stayed milky white while I received a pretty healthy burn on the arm that was not. Having been burned through different sunscreens before, I was full well expecting the same from this one. I guess the testing methods that K2 employed while coming up with this stuff (rough water testing, actual running, etc.) really worked, one application has kept me free of pain on numerous days since first trying it out! The only reason I did not give it 5 stars is due to the packaging of the product - the bottle has a rather flimsy flip top cap with an even flimsyer hinge that has broken on both bottles of sunscreen I own. If K2 were to revise this design, I would revise my rating of the product! | |
| 72HW at REI on 06/29/2009 | |
Works Great For My Long Bike Rides | |
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| I first bought this at my local REI just because I needed sunblock in general. I ended up using it before a 70 mile bike ride in the scortching hot sun during the most recent heat wave that came through southern California. I only applied it once and didnt have to think about it again. I was sweating a lot but not once did the lotion run off into my eyes. It actually elevated my performance in a sense because I only had to focus on the ride and nothing else. I am sold on this stuff and I would recommend it to anyone who spends time outside for ANY length of time. | |
| The Bruce at REI on 04/24/2009 | |