TOP PICK · BEST CODE TODAY
25%OFF25% Off Boss Golf Clothing at Function 1825% off your order. Applies to: Select categories.✓ VerifiedSelect categories
Proof·Tested not used yet·0 used today0%
Today's Function 18 codes & verification report
We're tracking 23 verified codes for Function 18; 0 were verified in the last 30 days. The best current offer: 25% Off Boss Golf Clothing at Function 18.
25%OFF
CODESelect categories
25% Off Boss Golf Clothing at Function 18
25% off your order. Applies to: Select categories.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
25%OFF
CODESelect items
25% Off Boss Golf Clothing at Function 18
25% off your order. Applies to: Select items.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
10%OFF
CODESelect items
10% Off Select Items at Function 18
10% off your order. Applies to: Select items.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
10%OFF
CODESale items only
10% Off Clearance Items at Function 18
10% off your order. Applies to: Sale items only.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
20%OFF
CODEStorewide
20% Off Storewide at Function 18
20% off your order. Works sitewide — no specific product required.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
10%OFF
CODEStorewide
10% Off Storewide at Function 18
10% off your order. Works sitewide — no specific product required.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
10%OFF
CODEStorewide
10% Off Storewide at Function 18
10% off your order. Works sitewide — no specific product required.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
10%OFF
CODESelect items
10% Off Select Items at Function 18
10% off your order. Applies to: Select items.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
20%OFF
CODESelect items
20% Off Select Items at Function 18
20% off your order. Applies to: Select items.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
20%OFF
CODESelect categories
20% Off Nike Golf Shoes at Function 18
20% off your order. Applies to: Select categories.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
20%OFF
CODESelect items
20% Off Select Items at Function 18
20% off your order. Applies to: Select items.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
$50OFF
CODEother
$50 Off Select Items at Function 18
$50 Off Select Items at Function 18
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
10%OFF
CODEStorewide
10% Off Storewide at Function 18
10% off your order. Works sitewide — no specific product required.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
10%OFF
CODESelect items
10% Off Select Items at Function 18
10% off your order. Applies to: Select items.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
20%OFF
CODESale items only
20% Off Clearance Items at Function 18
20% off your order. Applies to: Sale items only.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
20%OFF
CODESelect categories
20% Off Specific Categories at Function 18
20% off your order. Applies to: Select categories.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
30%OFF
CODESelect items
30% Off Full Price Castore at Function 18
30% off your order. Applies to: Select items.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
20%OFF
CODESelect categories
20% Off Selected Items at Function 18
20% off your order. Applies to: Select categories.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
15%OFF
CODESelect items
15% Off Select Items at Function 18
15% off your order. Applies to: Select items.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
10%OFF
CODEStorewide
10% Off Storewide at Function 18
10% off your order. Works sitewide — no specific product required.
Test proofLast used not used yetUsed today: 0Success rate 0%Be the first to confirm
More Function 18 deals No code needed
10% OffDeal
Save up to 10% Off with Function 18 loyalty program rewards including points on purchases, member-exclusive discounts, and special perks. Join the program to unlock savings.
Free ShippingDeal
Function 18 offers free standard shipping on most orders, which is automatically applied during checkout.
Newsletter OfferDeal
Function 18 offers exclusive discounts when you sign up for their newsletter. You'll receive email-only deals, early sale access, and special promotions directly to your inbox.
Code activity
Verifications this week
0
Codes verified (30 days)
0
Best discount (90 days)
—
Codes used today
0
Verified codes per month
0
0
0
0
0
0
0
0
0
0
0
0
0
NovDecJanFebMarAprMayJunJulAugSepOctNov
Website traffic & insights
Source: Similarweb · Updated May 2026 · Compare storesMonthly visits
232K
▼ 4.9% vs last month
Global rank
#172,745
GB rank
#10,664
Category rank
#5068
Monthly visits (last 3 months)
MarAprMay
Traffic sources
Engagement
Avg. visit duration01:27
Pages per visit4.1
Bounce rate44.6%
Mobile share74%
Top countries
GBUnited Kingdom60.8%
AUAustralia5.4%
USUnited States4.8%
IEIreland2.1%
CACanada2.1%
VNVietnam1.9%
UAUkraine1.6%
NONorway1.4%
KRSouth Korea1.3%
PHPhilippines1.3%
Shopper reviews
Write a review0.0☆☆☆☆☆0 ratings
5
4
3
2
1
Saving tips from the community
No tips yet. Know a way to pay less here? Share it with other shoppers.
Store policies & ways to save
About Function 18. Function 18 coupon codes, tested automatically every few hours.