Pearl Izumi Elite Sun Sleeves

Pearl Izumi's Elite Sun Sleeves will protect your arms against the sun's UV rays without making you uncomfortably hot.

Essentially, these are simple tubes of fabric with what Pearl Izumi call Direct-vent mesh on the bottom for extra ventilation. The top section, the bit most exposed to the sun, is rated UPF 40+, which means that it blocks over 97.5% of UV radiation.

The Sun Sleeves are made from a really thin nylon/Lycra fabric. Unlike most arm/knee/leg warmers, these have no brushed inner face. These are all about covering you up, not providing insulation.

On the contrary, these are infused with Coldblack technology that helps reflect the sunlight away from dark clothing so that its not absorbed and transferred on to you. The science behind it is sound although the difference it makes to your temperature is marginal.

I tried wearing a Pearl Izumi Sun Sleeve on one arm and a similarly thin sleeve from another brand (with no Coldblack treatment) on the other arm. I couldn't discern a difference in the way each arm felt. That's not to say that there was no difference in temperature, and it tells us nothing about the effectiveness of Coldblack because the fabrics weren't exactly the same, but the point I'm making is that you shouldn't expect miracles here.

The main thing is that these are a comfortable option for covering up your arms from the summer sun without adding much warmth. The double-thickness fabric at the top holds them in place just fine and you can't feel the single flatlock stitched seam. Those transfers are reflective. We're half expecting them to become tatty at some stage but they're doing okay so far.

If you really want to reflect heat away, you could always go for the white Sun Sleeves (same price). Rather than containing Coldblack, these have an Ice-fil treatment that has a slight cooling effect when you sweat.

Verdict

Arm covers to keep UV rays off your skin without adding too much warmth.