Alpinestars Flex-AST 5 Motorcycle Jeans

The Flex-AST 5 Motorcycle Jeans are designed for urban riding and combine a classic denim look with modern protective technology. The lightweight, monolayer stretch denim construction ensures high comfort and freedom of movement – both on the motorcycle and in everyday life. Integrated knee protectors with adjustable positioning and the ergonomic fit offer functional protection and exceptional comfort, while thoughtful details make the jeans particularly suitable for everyday use and highly versatile. This makes the Flex-AST 5 the ideal choice for riders who want to combine protection, comfort, and a timeless look.

Features:

Lightweight monolayer stretch denim construction
Ergonomic, slightly tapered fit
Knee protectors with 3-level adjustable positioning
Reinforced seams in high-stress areas
Raised back waistband for a better fit in the riding position
Low-set hand pockets with optimized access in the seated position
Selvedge-style inner seam with contrast thread
Alpinestars logo embroidery on the coin pocket
Ventilated protector pockets
Available in black or blue

Specifications:

Protective clothing for motorcycle use, Class A (EN 17092-4:2020)
Knee protectors: Nucleon Flex Plus Level 1

Color:	blue washed out
Size:	40
Pants Type:	Motorcycle Jeans
Sport:	Motorcycle
Material type:	Cotton
Features:	Knee protectors included
Gender:	Men
Material:	Textile
Season:	Summer
Application area:	Urban / City
Protection class (certification):	Protection class A
Material composition:	Outer material: 53% cotton, 30% polyester, 17% polyamide / Lining: 86% polyester, 14% cotton

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Size table

Size table for Alpinestars Flex-AST 5 Motorcycle Jeans:

Measurements in:

inch

Size	Waist (cm)	Hip (cm)	Thigh (cm)	Inseam (cm)	Body Height (cm)
2XS	63 - 69	77 - 83	48 - 50,5	77 - 78,5	156 - 162
XS	69 - 75	83 - 89	50,5 - 53	78,5 - 80	162 - 168
S	75 - 81	89 - 95	53 - 55,5	80 - 81,5	168 - 174
M	81 - 87	95 - 101	55,5 - 58,5	81,5 - 83	174 - 180
L	87 - 93	101 - 107	58,5 - 61	83 - 84,5	180 - 188
XL	93 - 99	107 - 112,5	61 - 63,5	84,5 - 86	188 - 191
2XL	99 - 105	112,5 - 118	63,5 - 65	86 - 87,5	191 - 195
3XL	105 - 111	118 - 123,5	65 - 66,5	87,5 - 89	191 - 195
4XL	111 - 117	123,5 - 129	66,5 - 68	89 - 90,5	195 - 199
5XL	117 - 123	129 - 134,5	66,5 - 68	89 - 90,5	195 - 199
6XL	123 - 129	134,5 - 140	66,5 - 68	89 - 90,5	195 - 199

How to measure your height:

1 Waist

Measure your waist at the narrowest part of your torso, usually just above your belly button. Stand upright and keep breathing normally while you place the tape measure horizontally around your body. Make sure the tape is not digging in but also not too loose, so you get a realistic measurement.

2 Hips

Measure your hips at the widest part of your buttocks. Stand upright with your feet about hip-width apart and place the tape measure horizontally around your body. Make sure the tape stays at the same height all the way around and does not slip up or down.

3 Inseam

Measure your inseam from the crotch down along the inside of your leg to the sole of your foot. Stand upright, ideally without shoes and with your legs slightly apart. Run the tape measure straight down and make sure it does not slip.

4 Thigh

Measure your thigh at the fullest part. Wrap the tape loosely around your leg without pulling it tight. For an accurate result, stand relaxed and distribute your weight evenly on both legs.