Sunny SF-T1407M Manual Walking Treadmill vs WalkingPad X21

Quick answer

Pick the Sunny SF-T1407M Manual Walking Treadmill for less weight to move (46.7 lb vs 81 lb) and incline (up to 13.5%); pick the WalkingPad X21 for a higher weight limit (240 lb vs 220 lb) and a longer belt (47.6 in vs 42 in).

Specs side by side

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Product	Max user	Belt	Weight	Speed	Incline	Folds	Remote	App	Size	Warranty	Where to buy
1 Sunny SF-T1407M Manual Walking TreadmillBudget tier	220 lb	42 x 13	46.7 lb	User-driven	Fixed 13.5%	✓ Yesdeck folds up	✕ No	None	Unfolded 49 x 23 x 50 in	3-year structural frame	Check price on Amazon
2 WalkingPad X21Premium tier	240 lb	47.6 x 18.1	81 lb	1 to 7.5 mph	None	✓ Yesdouble fold	✕ NoNo	Yes, KS Fit	55.8 x 27.9 x 41.4 in; folded 39.6 x 27.9 x 8.8 in	1 year, optional extension	Check price on Amazon

Figures are as published by the maker unless the product section below says otherwise. Hover or tap a cell for the full note. We link to the live price instead of printing one, because prices change daily.

Who should pick which

Pick the Sunny SF-T1407M Manual Walking Treadmill if

you will move it in and out of storage often. It weighs 46.7 lb against 81 lb.
you want to walk uphill. It has incline up to 13.5%, while the WalkingPad X21 is flat.
budget matters most. It sits in the budget tier.

Pick the WalkingPad X21 if

you weigh more than about 190 lb. It is rated for 240 lb against 220 lb, and we suggest 30 lb of headroom above your weight.
you are tall or walk briskly. Its 47.6-inch belt suits walkers up to about 7'2" at slow desk pace (6'0" with 6 inches of room to drift), and up to about 5'5" for brisk walking, against 6'1" at slow desk pace on the 42-inch belt.
you drift sideways while you read or type. A 18.1-inch belt gives more room than 13 inches.

Fit check

Model	User weight (with 30 lb headroom)	Height, slow desk pace	Height, with room to drift	Height, brisk walking
Sunny SF-T1407M Manual Walking Treadmill	up to about 190 lb	up to about 6'1"	up to about 4'10"	Too short by our rule
WalkingPad X21	up to about 210 lb	up to about 7'2"	up to about 6'0"	up to about 5'5"

Height fit uses our belt rule: a walking step of 0.41 times your height (0.45 when brisk), plus 12 inches for your shoe, plus 6 inches of room to drift where noted. It is a rough guide, not a measurement of you.

Sunny SF-T1407M Manual Walking Treadmill

Budget non-electric walkingSunny Health & Fitness SF-T1407M Manual Walking Treadmill, Non-Electric, Foldable

Max user 220 lbBelt 42 x 13Incline fixed 13.5%Folds yes, deck folds up

Budget tierCheck price on Amazon

WalkingPad X21

Most compact folding jogging treadmillWalkingPad X21 Double-Fold Treadmill

Max user 240 lbBelt 47.6 x 18.1Incline NoneFolds Yes, double fold

Read our full review →

Premium tierCheck price on Amazon

Related comparisons

Full specs: Sunny SF-T1407M Manual Walking Treadmill, WalkingPad X21.

Our buying guides

How these pages are built

Every figure comes from the maker's product page, manual or the Amazon listing, and we only include models with a live, in-stock Amazon listing we checked ourselves. When sources disagree on a weight limit we use the lowest number. We do not test these machines ourselves.

Height fit starts from a typical walking step of 0.41 times your height (0.45 when walking briskly), adds 12 inches for your shoe, and 6 more inches of room to drift for a comfortable fit. These are rough guides, not measurements of you. Weight fit leaves 30 lb of headroom above your body weight.

How we research

Questions

Which holds more weight, the Sunny SF-T1407M Manual Walking Treadmill and WalkingPad X21?

The WalkingPad X21, rated 240 lb, against 220 lb for the Sunny SF-T1407M Manual Walking Treadmill.

Which is better for tall people?

The WalkingPad X21 has the longest belt at 47.6 inches, which suits walkers up to about 7'2" at slow desk pace (6'0" with 6 inches of room to drift), and up to about 5'5" for brisk walking, by our belt rule.

Which is lighter to move?

The Sunny SF-T1407M Manual Walking Treadmill at 46.7 lb.