how do you inflate the big agnes? Do you need a pump?

Tech Specs:

Material:

nylon (70D ) 

Dimensions:

[short ] 20 x 48 x 2.5 in; [petite ] 20 x 66 x 2.5 in; [regular ] 20 x 72 x 2.5 in; [long ] 20 x 78 x 2.5 in 

Rolled Size:

4 x 7.5 in 

Rating:

35 deg 

Shape:

rectangular 

Pump:

no 

Self-Inflating:

no 

Stuff Sack:

yes 

Weight:

[short] 16 oz; [petite] 19 oz; [regular] 22 oz; [long] 25 oz 

Recommended Use:

any activity which requires a sleeping bag...and some that don't 

Manufacturer Warranty:

lfietime