110 
American Agriculturist, February 10 
BACK OP THE HEEL —Eleven layers 
of heavy duck and highest grade 
rubber make this one of the strongest 
points of the whole boot. 
Extra heavy flange sole 
THE SOLE —A thick single-layer 
of the finest, toughest high-grade 
rubber. Its flange shape means 
extra protection and wear. 
THE ANKLE —Here the “ U. S. 
Boot has an extra "collar” that 
runs all the way round the leg, 
and on top of that is vulcanized a 
heavy side-stay. 
THE INSTEP —A series of gradu^ 
ated reinforcing layers in the 
instep combines unusual flexibil¬ 
ity mth surprising strength. 
In the 4 places where the strain 
is hardest “U.s.” 
reinforcements insure extra wear 
Unless a boot is skillfully made, it 
will break at one of four vital points 
and let the water through long before 
it should— 
It will give away at the heel — or 
break at the instep — or sag at the 
ankle or wear through at the sole — 
It’s at one of these four places that 
the strain on a boot is hardest. 
That’s why the makers of “U. S.” 
Boots have built a strong system of 
protection into these points of 
hardest wear. 
From 7 to 11 extra layers of fabric and 
tough rubber reinforce every pair of U. S. 
Boots at the very places that are generally 
the ‘‘weak spots.” 
The diagrams above show you just hozv 
U.S. Boots are built. Their construction is 
the result of 75 years of experience in boot 
making. Light enough for solid comfort— 
yet strong enough for the hardest tests you 
can give them—it takes years of experience 
to make a boot like that. 
Other ”U. 5.” Footwear—all built to 
give the utmost service 
You’ll find every type of rubber footwear in 
the big U. S. line. There’s the U. S. Walrus, 
the fhnous all-rubber overshoe—the U. S. 
lace Bootee, a rubber workshoe for spring 
and fall—U. S. Arctics and Rubbers—all 
styles and sizes for the whole family. Look 
for the “U. S.” trademark whenever you 
buy—the honor mark of the largest and 
oldest rubber organization in the world. 
United States Rubber Company 
