Kastking Backpack
Worth a lookShows a sweet-spot price point ($50.54 avg), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Avg price
Great$50.54avg listing price — sweet spot $15–$100
Competition
Great28%top-5 click share — an open shelf
Growth
Great+76.4%90-day search growth — must beat 0% to launch
Returns
Good2.5%return rate — above 5% kills the launch gate
Price range
Good$17.71–$151.28cheapest to priciest tracked listing — scored on the share inside $15–$100
Review moat
Good1,150.08avg incumbent reviews — the moat a new listing must climb
Market size
Good$389K$389K/yr · 607K searches
Brand share
Bad91%top-5 brand share — brand-locked demand
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
Conversion
Bad1.3%search→purchase rate — share of searches ending in a sale
Is kastking backpack profitable on Amazon?
According to Flapen's Amazon United States niche tracking, kastking backpack is a $389K/yr Amazon United States market (607K searches/yr). The top 5 brands hold 91% of demand. Verdict: Worth a look — 56/100.
Data updated Jul 23, 2026 · scored weekly · How we score niches
kastking backpack market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 8K–10K
- avg 100–250/product
- Revenue / yr
- $404K–$505K
- units × avg price
- Conversion rate
- 1.3%
- Avg BSR
- #34
- Page quality
- 0%
- Prime
- 98%
- Sponsored
- 98%
- Out of stock
- 0.4%
- Avg brand age
- 38 months
- Avg seller age
- 167 days
Competition: brands, sellers & click share
Clicks spread well past the top 5 (28% combined) — an open shelf where new products get seen.Brands
15 falling
Sellers
25
Top-5 brand share
91%
Top 20: 100%
Top-5 click share
28%
Top 20: 67%
Open market
6%
- KastKing70%
- PLUSINNO9%
- Piscifun6%
- Calamus3%
- MATEIN3%
- Rabjen3%
- Open — no brand owns it (9 brands, 6%)
kastking backpack demand & seasonality
Weekly Amazon search volume, last 12 weeks — +76.4% search growth over the last 90 days.Top kastking backpack search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- kastking backpack146K/yr
- fishing backpack with rod holder70K/yr
- tackle box bag52K/yr
- waterproof fishing backpack40K/yr
- tackle bag with trays included35K/yr
- small fishing backpack33K/yr
- fishing backpack with cooler32K/yr
- tackle bags31K/yr
- fishing tackle bags20K/yr
- fish backpack22K/yr
Top kastking backpack products & what they sell for
Every tracked product — its share of the shelf, its review moat, and what it sells for.Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
KastKing BlowBak Tactical Sling Tackle Bag-Lightweight Fishing Backpack Storge Fishing Gear and Equipment Gift for Men
KastKing$21.314.6★4,401 rev
KastKing BaitSpace 50L Fishing Tackle Backpack with Removable Bait Binder & 4 Tackle Boxes 2 Rod Holders Storage Fishing Gear and Equipment Black Camo
KastKing$85.104.7★203 rev
KastKing BlowBak Tactical Sling Tackle Bag-Lightweight Fishing Backpack Storge Fishing Gear and Equipment Gift for Men
KastKing$21.484.6★4,401 rev
KastKing KarryAll Fishing Tackle Backpack with Rod Holder 4 Tackle Boxes 40/26L Tackle Bag Storage Fishing Gear and Equipment Black Medium
KastKing$50.314.8★2,391 rev
KastKing KarryAll Fishing Tackle Backpack with Rod Holder 4 Tackle Boxes 40/26L Tackle Bag Storage Fishing Gear and Equipment Khaki Large
KastKing$70.774.8★2,391 rev
Newest
by launch date
Calamus GearMaster Tackle Backpack with Bait Binder Large Lightweight Water-Resistant Fishing Bag Rod Holders Food Storage
Calamus$72.8143 rev
Calamus GearMaster Tackle Backpack with Bait Binder Large Lightweight Water-Resistant Fishing Bag Rod Holders Food Storage
Calamus$88.1443 rev
KastKing BaitSpace 50L Fishing Tackle Backpack with Removable Bait Binder & 4 Tackle Boxes 2 Rod Holders Storage Fishing Gear and Equipment Black Camo
KastKing$81.0548 rev
KastKing KarryAll KastMate Fishing Tackle Backpack Water-Resistant Tackle Bag With 2 Rod Holders Fishing Gear and Equipment With Large Gear Storage Black
KastKing$40.00237 rev
KastKing BaitSpace 50L Fishing Tackle Backpack with Removable Bait Binder & 4 Tackle Boxes 2 Rod Holders Storage Fishing Gear and Equipment Black Camo
KastKing$85.10203 rev
Trending
90-day click momentumCalamus GearMaster Tackle Backpack with Bait Binder Large Lightweight Water-Resistant Fishing Bag Rod Holders Food Storage
Calamus$72.814.5★
KastKing BaitSpace Fishing Tackle Bag Water-resistant Tackle Storage with 2 Black Camo Tackle Boxes & Detachable Soft Bait Binder Adjustable Backpack for Bank Wading & Boat Fishing
KastKing$41.484.7★
Calamus GearMaster Tackle Backpack with Bait Binder Large Lightweight Water-Resistant Fishing Bag Rod Holders Food Storage
Calamus$88.144.5★
KastKing BaitSpace 50L Fishing Tackle Backpack with Removable Bait Binder & 4 Tackle Boxes 2 Rod Holders Storage Fishing Gear and Equipment Black Camo
KastKing$81.054.8★
KastKing Karryall Fishing Tackle Bags with 4 * 3600 Tackle Trays - Saltwater & Freshwater Fishing Gear Storage
KastKing$49.644.8★
What reviews say buyers love and hate about kastking backpack
What buyers praise and complain about, mined from review topics.What buyers love
“Excellent Product”
“It was true to size”
“Very spacious”
“The pockets are great”
“Good investment”
“the material feels durable”
“Good material”
“As advertised”
“Easy to use”
“Perfect for carrying with kids”
What buyers complain about
“Kinda small”
“It's very misleading”
“Im incredibly disappointed in the quality of this bag”
“it completely falling apart”
“Clip broke off on the carrying strap”
“bad zippers”
“Its a little pricey -”
“Capacity is crazy”
“Very big and bulky”
“This bag does not have a good place to carry either”
Top return reasons
Common kastking backpack questions
- Is kastking backpack profitable to sell on Amazon United States?
- The niche generates $389K/yr across 65 tracked products. 9 of 9 products launched in the last 360 days are still selling. 90-day search growth is +76.4%. Flapen's verdict: Worth a look (56/100).
- How competitive is the kastking backpack niche?
- 15 brands and 25 sellers compete. The top 5 products take 28% of clicks and top 5 brands hold 91% of demand.
- What do buyers complain about in kastking backpack?
- Top complaints mined from reviews: Size-Overall, Advertised Vs Actual Product, Quality-Overall. The return rate is 2.5%.
- What does it cost to enter the kastking backpack niche?
- Listings span $17.71–$151.28; the average listing price is $50.54 (sweet spot $15–$100). The average incumbent carries 1,150 reviews — the moat a new listing must climb.