how much weight does this product hold up to?

Tech Specs:

Material:

[Frame] Steel; [Seat] 600D polyester mini-ripstop 

Armrest:

Yes 

Cup Holder:

Yes 

Pillow:

No 

Dimensions:

[Seat width] 23.5 x 16.25 x 18in (60 x 41 x 46cm); [Chair back height] 34in (86cm) 

Weight:

8.5lb (3900g) 

Recommended Use:

Fishing, camping, picnics 

Manufacturer Warranty:

Lifetime 

Country of Origin:

China