Description
| CHEST SIZE | SIZE | UK SIZE | EU SIZE | USA SIZE |
| 90cm / 36″ | 2XS | 36 | 46 | 36 |
| 95cm / 38″ | XS | 38 | 48 | 38 |
| 100cm / 40″ | S | 40 | 50 | 40 |
| 105cm / 42″ | M | 42 | 52 | 42 |
| 110cm / 44″ | L | 44 | 54 | 44 |
| 115cm / 46″ | XL | 46 | 56 | 46 |
| 120cm / 48″ | 2XL | 48 | 58 | 48 |
| 125cm / 50″ | 3XL | 50 | 60 | 50 |

Due to the elasticated side panels you may find you need to order the chest size smaller for a snug fit. A snug fit provides the most efficient transfer of heat from the heated jacket, through your required under layer (e.g. long sleeved t-shirt), to your upper body.
TECHNICAL
The latest KEIS jacket, the ULTRAFLEX is a thinner, more lightweight version of the J505, using Micro Carbon and Far Infrared tech across the chest, back and collar. With an integrated battery pocket, the ULTRAFLEX can now be used with the 5000mAh KEIS battery or powered directly by your bike. With a Microsuede lining, the ULTRAFLEX remains hot, but breathable, and a lowered back, reducing risk of the jacket riding up during your journeys. As a mid-layer, the ULTRAFLEX also features thumb holsters to make gearing up quicker and more efficient
KEIS FEATURES
Central Power Hub: Got other KEIS kit? Connect your KEIS garments together using the included output sockets in the cuff of both arms and inside the waistband of ANY jacket, vest, or bodywarmer
Dual Powered: All KEIS products can be powered either via a KEIS portable battery pack or using a vehicle supply lead which comes included with many items including Jackets, Vests, Bodywarmers, Gloves and more
Why Wear Heated Gear
If you’re an all-weather rider, you’ll know that the winter months can mostly be unpleasant to ride through.
Increased Control:
When your hands are cold, you lose dexterity which can make bike handling difficult. Heated gloves help minimise loss of control
Increased Comfort:
Simply put, being cold is uncomfortable. Heated kit helps make your winter rides that extra bit more enjoyable
Reduced Risk:
Being cold increases your risk of road accidents, as your reaction time and concentration decreases. Being warm on the bike equates to added protection
Flexibility:
Ride without the bulk! Heating gear eliminates the need to wear multiple heavy layers, which can prove uncomfortable when on the bike for longer periods of time





















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